WO2007114144A1 - 修飾シリカゲル及びその利用 - Google Patents
修飾シリカゲル及びその利用 Download PDFInfo
- Publication number
- WO2007114144A1 WO2007114144A1 PCT/JP2007/056590 JP2007056590W WO2007114144A1 WO 2007114144 A1 WO2007114144 A1 WO 2007114144A1 JP 2007056590 W JP2007056590 W JP 2007056590W WO 2007114144 A1 WO2007114144 A1 WO 2007114144A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silica gel
- compound
- alkyldisilane
- group
- general formula
- Prior art date
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 150000001875 compounds Chemical class 0.000 claims abstract description 134
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 46
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 39
- 229920000642 polymer Polymers 0.000 claims abstract description 34
- 229920001577 copolymer Polymers 0.000 claims abstract description 28
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 17
- 125000005843 halogen group Chemical group 0.000 claims abstract description 16
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 15
- 239000000741 silica gel Substances 0.000 claims description 111
- 229910002027 silica gel Inorganic materials 0.000 claims description 111
- -1 disilane compound Chemical class 0.000 claims description 66
- 238000006243 chemical reaction Methods 0.000 claims description 47
- 125000005372 silanol group Chemical group 0.000 claims description 39
- 238000004811 liquid chromatography Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000007795 chemical reaction product Substances 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 238000004587 chromatography analysis Methods 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- ONCCWDRMOZMNSM-FBCQKBJTSA-N compound Z Chemical compound N1=C2C(=O)NC(N)=NC2=NC=C1C(=O)[C@H]1OP(O)(=O)OC[C@H]1O ONCCWDRMOZMNSM-FBCQKBJTSA-N 0.000 claims description 9
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 claims description 2
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims 1
- 229940126062 Compound A Drugs 0.000 claims 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 50
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 30
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 25
- 239000003513 alkali Substances 0.000 description 24
- 238000001816 cooling Methods 0.000 description 22
- 239000011148 porous material Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 21
- 238000012856 packing Methods 0.000 description 21
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 18
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 238000010992 reflux Methods 0.000 description 17
- 230000018044 dehydration Effects 0.000 description 16
- 238000006297 dehydration reaction Methods 0.000 description 16
- 238000006460 hydrolysis reaction Methods 0.000 description 15
- 238000007385 chemical modification Methods 0.000 description 12
- 239000000499 gel Substances 0.000 description 11
- 238000010828 elution Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- GZGREZWGCWVAEE-UHFFFAOYSA-N chloro-dimethyl-octadecylsilane Chemical compound CCCCCCCCCCCCCCCCCC[Si](C)(C)Cl GZGREZWGCWVAEE-UHFFFAOYSA-N 0.000 description 9
- WDVUXWDZTPZIIE-UHFFFAOYSA-N trichloro(2-trichlorosilylethyl)silane Chemical compound Cl[Si](Cl)(Cl)CC[Si](Cl)(Cl)Cl WDVUXWDZTPZIIE-UHFFFAOYSA-N 0.000 description 9
- ABDDAHLAEXNYRC-UHFFFAOYSA-N trichloro(trichlorosilylmethyl)silane Chemical compound Cl[Si](Cl)(Cl)C[Si](Cl)(Cl)Cl ABDDAHLAEXNYRC-UHFFFAOYSA-N 0.000 description 9
- 239000005051 trimethylchlorosilane Substances 0.000 description 9
- 239000000945 filler Substances 0.000 description 8
- 239000011541 reaction mixture Substances 0.000 description 8
- ISAKRJDGNUQOIC-UHFFFAOYSA-N Uracil Chemical compound O=C1C=CNC(=O)N1 ISAKRJDGNUQOIC-UHFFFAOYSA-N 0.000 description 7
- 239000012670 alkaline solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 230000000379 polymerizing effect Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 6
- KSNFJZGSDIMSME-UHFFFAOYSA-N trichloro(2-trichlorosilylpropan-2-yl)silane Chemical compound Cl[Si](Cl)(Cl)C(C)(C)[Si](Cl)(Cl)Cl KSNFJZGSDIMSME-UHFFFAOYSA-N 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000000921 elemental analysis Methods 0.000 description 4
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 4
- 239000005055 methyl trichlorosilane Substances 0.000 description 4
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 4
- 238000004810 partition chromatography Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- ICJGKYTXBRDUMV-UHFFFAOYSA-N trichloro(6-trichlorosilylhexyl)silane Chemical compound Cl[Si](Cl)(Cl)CCCCCC[Si](Cl)(Cl)Cl ICJGKYTXBRDUMV-UHFFFAOYSA-N 0.000 description 4
- GFJGILDCJZMQTN-UHFFFAOYSA-N trichloro(8-trichlorosilyloctyl)silane Chemical compound Cl[Si](Cl)(Cl)CCCCCCCC[Si](Cl)(Cl)Cl GFJGILDCJZMQTN-UHFFFAOYSA-N 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- OJPPJRYHIOBVQC-UHFFFAOYSA-N dichloro-[1-[dichloro(methyl)silyl]ethyl]-methylsilane Chemical compound C[Si](Cl)(Cl)C(C)[Si](C)(Cl)Cl OJPPJRYHIOBVQC-UHFFFAOYSA-N 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 3
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004438 BET method Methods 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 150000001491 aromatic compounds Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 150000007514 bases Chemical class 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009841 combustion method Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- BSCPNBFOKAODEJ-UHFFFAOYSA-N dichloro-[2-[dichloro(methyl)silyl]propan-2-yl]-methylsilane Chemical compound C[Si](Cl)(Cl)C(C)(C)[Si](C)(Cl)Cl BSCPNBFOKAODEJ-UHFFFAOYSA-N 0.000 description 2
- HNYRAGHKTXOSFE-UHFFFAOYSA-N dichloro-[[dichloro(methyl)silyl]methyl]-methylsilane Chemical compound C[Si](Cl)(Cl)C[Si](C)(Cl)Cl HNYRAGHKTXOSFE-UHFFFAOYSA-N 0.000 description 2
- 229940117389 dichlorobenzene Drugs 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 2
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- FOQJQXVUMYLJSU-UHFFFAOYSA-N triethoxy(1-triethoxysilylethyl)silane Chemical compound CCO[Si](OCC)(OCC)C(C)[Si](OCC)(OCC)OCC FOQJQXVUMYLJSU-UHFFFAOYSA-N 0.000 description 2
- LMEKMHPYJBYBEV-UHFFFAOYSA-N triethoxy(2-triethoxysilylpropan-2-yl)silane Chemical compound CCO[Si](OCC)(OCC)C(C)(C)[Si](OCC)(OCC)OCC LMEKMHPYJBYBEV-UHFFFAOYSA-N 0.000 description 2
- NIINUVYELHEORX-UHFFFAOYSA-N triethoxy(triethoxysilylmethyl)silane Chemical compound CCO[Si](OCC)(OCC)C[Si](OCC)(OCC)OCC NIINUVYELHEORX-UHFFFAOYSA-N 0.000 description 2
- JCGDCINCKDQXDX-UHFFFAOYSA-N trimethoxy(2-trimethoxysilylethyl)silane Chemical compound CO[Si](OC)(OC)CC[Si](OC)(OC)OC JCGDCINCKDQXDX-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- RDRJOHWRPPUUNI-UHFFFAOYSA-N 1-[dimethoxy(methyl)silyl]ethyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C(C)[Si](C)(OC)OC RDRJOHWRPPUUNI-UHFFFAOYSA-N 0.000 description 1
- YGVDIDRIUJWJIF-UHFFFAOYSA-N 1-[dimethoxy(methyl)silyl]octyl-dimethoxy-methylsilane Chemical compound CCCCCCCC([Si](C)(OC)OC)[Si](C)(OC)OC YGVDIDRIUJWJIF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NPPQSCRMBWNHMW-UHFFFAOYSA-N Meprobamate Chemical group NC(=O)OCC(C)(CCC)COC(N)=O NPPQSCRMBWNHMW-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical group NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- IBSRZWOEDXOVEO-UHFFFAOYSA-N [dimethoxy(methyl)silyl]methyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C[Si](C)(OC)OC IBSRZWOEDXOVEO-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 238000005377 adsorption chromatography Methods 0.000 description 1
- 150000001343 alkyl silanes Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- MXOSTENCGSDMRE-UHFFFAOYSA-N butyl-chloro-dimethylsilane Chemical compound CCCC[Si](C)(C)Cl MXOSTENCGSDMRE-UHFFFAOYSA-N 0.000 description 1
- DCEFJHOMYGZUCQ-UHFFFAOYSA-N butyl-ethoxy-dimethylsilane Chemical compound CCCC[Si](C)(C)OCC DCEFJHOMYGZUCQ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- DBKNGKYVNBJWHL-UHFFFAOYSA-N chloro-dimethyl-octylsilane Chemical compound CCCCCCCC[Si](C)(C)Cl DBKNGKYVNBJWHL-UHFFFAOYSA-N 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 125000006165 cyclic alkyl group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- ILZIHGWXTARXAO-UHFFFAOYSA-N dichloro(dichlorosilylmethyl)silane Chemical compound Cl[SiH](Cl)C[SiH](Cl)Cl ILZIHGWXTARXAO-UHFFFAOYSA-N 0.000 description 1
- KTQYJQFGNYHXMB-UHFFFAOYSA-N dichloro(methyl)silicon Chemical compound C[Si](Cl)Cl KTQYJQFGNYHXMB-UHFFFAOYSA-N 0.000 description 1
- BLTPERUEKUDSON-UHFFFAOYSA-N dichloro-[1-[dichloro(methyl)silyl]hexyl]-methylsilane Chemical compound CCCCCC([Si](C)(Cl)Cl)[Si](C)(Cl)Cl BLTPERUEKUDSON-UHFFFAOYSA-N 0.000 description 1
- VFJZARVUHIMDKZ-UHFFFAOYSA-N dichloro-[3-[dichloro(methyl)silyl]butan-2-yl]-methylsilane Chemical compound C[Si](Cl)(Cl)C(C(C)[Si](C)(Cl)Cl)C VFJZARVUHIMDKZ-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- RSIHJDGMBDPTIM-UHFFFAOYSA-N ethoxy(trimethyl)silane Chemical compound CCO[Si](C)(C)C RSIHJDGMBDPTIM-UHFFFAOYSA-N 0.000 description 1
- SRBBHLHDXJTJJZ-UHFFFAOYSA-N ethoxy-dimethyl-octadecylsilane Chemical compound CCCCCCCCCCCCCCCCCC[Si](C)(C)OCC SRBBHLHDXJTJJZ-UHFFFAOYSA-N 0.000 description 1
- MRXDJSZXCXOGCH-UHFFFAOYSA-N ethoxy-dimethyl-octylsilane Chemical compound CCCCCCCC[Si](C)(C)OCC MRXDJSZXCXOGCH-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229940095102 methyl benzoate Drugs 0.000 description 1
- 239000005048 methyldichlorosilane Substances 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000004366 reverse phase liquid chromatography Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004819 silanols Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- OBQPCBCKBUQQHH-UHFFFAOYSA-N trichloro(3-trichlorosilylbutan-2-yl)silane Chemical compound Cl[Si](Cl)(Cl)C(C)C(C)[Si](Cl)(Cl)Cl OBQPCBCKBUQQHH-UHFFFAOYSA-N 0.000 description 1
- PPDADIYYMSXQJK-UHFFFAOYSA-N trichlorosilicon Chemical group Cl[Si](Cl)Cl PPDADIYYMSXQJK-UHFFFAOYSA-N 0.000 description 1
- XLUIBHBNUCWHGE-UHFFFAOYSA-N trimethoxy(1-trimethoxysilyloctyl)silane Chemical compound CCCCCCCC([Si](OC)(OC)OC)[Si](OC)(OC)OC XLUIBHBNUCWHGE-UHFFFAOYSA-N 0.000 description 1
- 229940035893 uracil Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/159—Coating or hydrophobisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/281—Sorbents specially adapted for preparative, analytical or investigative chromatography
- B01J20/286—Phases chemically bonded to a substrate, e.g. to silica or to polymers
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- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
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- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
- B01J20/3217—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond
- B01J20/3219—Resulting in a chemical bond between the coating or impregnating layer and the carrier, support or substrate, e.g. a covalent bond involving a particular spacer or linking group, e.g. for attaching an active group
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- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/328—Polymers on the carrier being further modified
Definitions
- the present invention relates to a silica gel having a modified surface, a production method thereof, a chromatography carrier using the modified silica gel, a column for liquid chromatography, and a method for analyzing or fractionating a sample.
- Silica gel, organic polymer, titer, zircoa, alumina, and the like are used as chromatographic carriers such as column fillers for liquid chromatography.
- silica gel is frequently used because it allows easy diffusion of solute molecules into its pores and has high separation performance.
- silica gel itself is used as a carrier for normal phase chromatography, and a silanol group on the surface of the silica gel is chemically modified with an alkyl silane, thereby allowing octadecyl, octyl, butyl, methyl
- a group into which a group is introduced is often used as a carrier for reversed phase chromatography.
- Patent Document 1 discloses that a part of the silica gel surface is covered with a silicone polymer having a hydrosilyl group, and a silanol group is a first polymer such as octadecyl group.
- a modified silica gel is described in which it is modified with a chemically modifying group and the hydrosilyl group is modified with a second chemical modifying group such as a sulfone group.
- Patent Document 2 discloses a chromatographic packing material having a porous inorganic mono-organic compound and an hybrid particle force produced by mixing a compound containing an organic unit during the production of silica gel.
- the modified silica gel of Patent Document 1 is difficult to synthesize in large quantities because the surface is coated with hydrosilane and the manufacturing process is complicated and the conditions are severe.
- the filler having the hybrid material strength described in Patent Document 2 is not preferable because the properties as a filler for liquid chromatography and the separation performance are greatly different from those of silica gel.
- Patent Document 1 Japanese Patent Laid-Open No. 2003-75421
- Patent Document 2 JP 2004-538468 A
- Silica group is chemically modified by reacting silica gel with an alkyldisirane compound represented by the following general formula [I] or Z and the following general formula [ ⁇ ].
- a modified silica gel in which part or all of the surface of the silica gel is covered with the polymer or copolymer of the alkyldisilane compound is obtained. .
- This modified silica gel is very excellent in resistance to alkalinity.
- X 1 is the same or different and represents a hydrogen atom, a halogen atom, or an alkoxy group having 1 to 4 carbon atoms, and n represents an integer of 1 to 10).
- X 2 is the same or different and represents a hydrogen atom, a halogen atom, or an alkoxy group having 1 to 4 carbon atoms
- R 1 is the same or different and is an alkyl having 1 to 30 carbon atoms.
- m represents an integer of 1 to 10.
- R 2 represents an alkyl group having 1 to 3 carbon atoms, and by reacting with the product, the silanol group remaining on the surface of the modified silica gel is chemically modified with an alkyl monosilane compound. (2-stage modified silica gel in which some or all of the silanol groups on the surface of the modified silica gel are modified with the following alkyl monosilane compound is obtained.
- This two-stage modified silica gel has higher alkali resistance.
- X 3 is the same or different and represents a hydrogen atom, a halogen atom, or an alkoxy group having 1 to 4 carbon atoms
- R 2 is the same or different and has 1 to 30 carbon atoms.
- the present invention has been completed based on the above findings, and provides the following modified silica gel, a method for producing a modified silica gel, a carrier for chromatography, and the like.
- Item 1 Part or all of the force on the silica gel surface
- Item 2 The modified silica gel according to Item 1, wherein the polymer or copolymer and silica gel are bonded by a siloxane bond.
- Item 3 The modified silica gel according to Item 1 or 2, wherein a weight ratio of the polymer or copolymer to the silica gel (polymer or copolymer Z silica gel) is 0.01 to 10.
- Item 4 The modified silica gel according to any one of Items 1 to 3, wherein the polymer or copolymer covering the silica gel has a thickness of 2 to 20A.
- Item 5 Part or all of the silanol groups on the surface of the modified silica gel according to any one of Items 1 to 4 Force modified with an alkyl monosilane compound represented by the above general formula [III] or In the above general formula [III], R 2 is modified with an alkyl monosilane compound having an alkyl group having 4 to 30 carbon atoms, and in the above general formula [III], R 2 is an alkyl group having 1 to 3 carbon atoms. Modified silica gel that has been modified with an alkyl monosilane compound shown.
- Item 6 Silica gel and at least one alkyldisilane compound selected from the group consisting of a compound represented by the above general formula [I] and a compound represented by the above general formula [II] A first step of reacting to modify the silanol group of the silica gel with this alkyldisilane compound;
- a second step of polymerizing or copolymerizing the alkyldisilane compound by reacting the reaction product of the first step with water;
- a modified silica gel obtained by a method comprising:
- Item 7 The modified silica gel according to Item 6, wherein the weight ratio of the alkyldisilane compound to the silica gel in the first step (alkyldisilane compound Z silica gel) is 0.01 to 10.
- Item 8 Silica gel and at least one alkyldisilane compound selected from the group consisting of the compound represented by the general formula [I] and the compound represented by the general formula [ ⁇ ] A first step of reacting to modify the silanol group of the silica gel with this alkyldisilane compound;
- the reaction product of the second step is reacted with the alkyl monosilane compound represented by the above general formula [III], or the reaction product of the second step and R 2 in the above general formula [III] is By reacting with an alkyl monosilane compound having an alkyl group having 4 to 30 carbon atoms, and further reacting with an alkyl monosilane compound in which R 2 represents an alkyl group having 1 to 3 carbon atoms in the general formula [III]. Modifying the remaining silanol group with an alkyl monosilane compound
- a modified silica gel obtained by a method comprising:
- Item 9 Amount of alkyl disilane compound used in the first step The weight ratio of alkyl disilane compound to silica gel (alkyl disilane compound Z silica gel)
- silica gel and at least one alkyldisilane compound selected from the group consisting of a compound represented by the above general formula [I] and a compound represented by the above general formula [II] A first step of reacting to modify the silanol group of the silica gel with this alkyldisilane compound;
- a second step of polymerizing or copolymerizing the alkyldisilane compound by reacting the reaction product of the first step with water;
- Item 11 The method according to Item 10, wherein the reaction temperature in the first step is 60 to 200 ° C, and the reaction temperature in the second step is 30 to 200 ° C.
- Item 12 The method according to Item 10 or 11, wherein the amount of alkyldisilane compound used in the first step is 0.01 to 10 in terms of weight ratio of alkyldisilane compound to silica gel (alkyldisilane compound Z silica gel). .
- Item 13 The reaction product of the second step and the alkyl monosilane compound represented by the above general formula [III] are reacted, or the reaction product of the second step and the above general formula [III] III] in which R 2 represents an alkyl monosilane compound in which R 2 represents an alkyl group having 4 to 30 carbon atoms, and in the above general formula [III], R 2 represents an alkyl group having 1 to 3 carbon atoms. By reacting with the compound, the remaining silanol group is combined with this alkyl monosilane.
- Item 13 The method according to any one of Items 10 to 12, which comprises a third step of modifying with a product.
- Item 14 A chromatographic carrier comprising the modified silica gel according to any one of Items 1 to 9.
- Item 15 A liquid chromatography column packed with the chromatography carrier according to Item 14.
- Item 16 A method for analyzing or fractionating a sample using the chromatography carrier according to Item 14.
- silica gel is reacted with at least one alkyldisilane compound selected from the group consisting of the compound represented by the above general formula [I] and the compound power represented by the above general formula [II].
- the first step of modifying the silanol group of the silica gel with this alkyldisilane compound, and the second step of polymerizing or copolymerizing the alkyldisilane compound by reacting the reaction product of the first step with water A method including:
- the raw silica gel has a particle diameter of usually about 1 to about LOOO ⁇ m, preferably about 2 to 200 ⁇ m.
- the pore diameter is typically 10: about LOOOOA, and preferably about 50 to 3000 A
- the surface area is usually 1 ⁇ : L000m 2 Zg about, if preferably 5 ⁇ 600m 2 Zg approximately porous silica gel Good.
- the pore diameter is within the above range, the compound to be analyzed or separated easily enters and a sufficient surface area can be obtained. Further, when the surface area is within the above range, the number of silanol groups is sufficient and the effect of improving alkali resistance by surface modification can be sufficiently obtained.
- the shape of the silica gel is not limited, but a spherical shape is preferable in order to obtain high separation performance. High purity silica gel is preferred.
- the group or the substituted silyl group may be the same or different. In some respects, they are preferably the same.
- compound a compound containing chlorine or bromine as X 1 includes a chlorine atom as a good Mashigu X 1 is more preferable. These compounds are preferred because of their high reactivity with silanol groups.
- n is preferably 1 to 8, and more preferably 1 to 3. Within this range, the polymer or copolymer of the alkyldisilane compound of the present invention is easily formed in the surface direction over the silica gel surface.
- Such compounds include bis (dichlorosilyl) methane, bis (trichlorosilyl) methane, bis (trichlorosilyl) ethane, bis (trichlorosilyl) propane, bis (trichlorosilyl) butane, Bis (trichlorosilyl) hexane, bis (trichlorosilyl) octane, bis (trimethoxysilyl) ethane, bis (triethoxysilyl) ethane, bis (triethoxysilyl) methane, bis (triethoxysilyl) propane, bis ( And triethoxysilyl) octane and bis (trimethoxysilyl) octane.
- the substituted silyl groups may be the same or different, but are preferably the same in terms of easy production.
- R 1 in the general formula [ ⁇ ⁇ ] may be a straight-chain alkyl group, a branched alkyl group, or a cyclic alkyl group, but is straight-chain in terms of easy availability.
- An alkyl group is preferred.
- the number of carbon atoms of R 1 is from 1 to 3 are preferred.
- the polymer or copolymer of the alkyl disilane compound of the present invention is formed on the surface of the silica gel and is formed in the surface direction. Easy to make.
- R 1 is terminally selected from an aryl group, an amino group (one NH 3), a cyan group (one CN), or -tro.
- Bamate group (O—C (O) —NH), Carbamide group (NH—C (O) —NH), ester group (O—C (O)), and carbonate group (O—C (O) —O) It may be an alkyl group having at least one functional group selected from the group consisting of force.
- a compound containing a chlorine atom or a bromine atom as X 2 is more preferably a compound containing chlorine atoms as good Mashigu X 2. These compounds are preferred because of their high reactivity with silanol groups.
- m is preferably 1 to 8, and more preferably 1 to 3. Within this range, the polymer or copolymer of the alkyldisilane compound of the present invention is easily formed in the surface direction over the silica gel surface.
- Such compounds include bis (methyldichlorosilyl) methane, bis (methyldichlorosilyl) ethane, bis (methyldichlorosilyl) propane, bis (methyldichlorosilyl) butane, and bis ( Methyldichlorosilyl) hexane, bis (methyldichlorosilyl) octa
- Toxisilyl) hexane bis (methyldimethoxysilyl) octane and the like.
- Bis (methyldichlorosilane) preferred by propane
- silica gel by reacting silica gel with a compound represented by the above general formula [I] and at least one alkyldisilane compound selected from the group consisting of the compound power represented by the above general formula [II]. Then, the silanol group on the silica gel surface is chemically modified with an alkyldisilane compound. As a result, a product in which the alkyldisilane compound is bonded to part or all of the silanol groups of the silica gel via a siloxane bond is obtained.
- This chemical modification reaction may be usually performed by heating silica gel and the above alkyldisilan compound as a chemical modifier in a solvent.
- the reaction temperature is preferably about 60 to 200 ° C, more preferably about 100 to 160 ° C. If it is the said temperature range, introduction
- the reaction time is preferably about 0.5 to 20 hours, more preferably about 3 to 10 hours.
- the type of the solvent is not particularly limited, but aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene, dichlorobenzene, which do not react with the above alkyldisilane compound and are stable at the reaction temperature.
- aromatic hydrocarbons such as benzene, toluene, xylene, mesitylene, dichlorobenzene, which do not react with the above alkyldisilane compound and are stable at the reaction temperature.
- a substituted aromatic compound such as is preferable.
- the amount of the alkyldisilane compound used is preferably about 0.01 to 10, more preferably about 0.1 to 1, based on the weight ratio of the alkyldisilane compound to the silica gel (alkyldisilane compound Z silica gel). A range of 0.1 to 0.5 is even more preferable. When the ratio is within the above range, the resulting chemically modified silica gel can provide a sufficient effect of improving alkali resistance without impairing the function of the silica gel as a chromatographic carrier.
- the chemical modification reaction is preferably carried out in the presence of a basic compound such as pyridine, triptylamine, or imidazole.
- a basic compound such as pyridine, triptylamine, or imidazole.
- the condensation reaction between is promoted.
- the polymer By reacting the reaction product after the chemical modification reaction with water, The polymer is polymerized. This polymerization can be carried out by mixing the product of the chemical modification reaction in the first step with water and heating as necessary. As a result, among the functional groups of the alkyldisilane compound, unreacted reactive sites that have not undergone a condensation reaction with the silanol groups of silica gel are hydrolyzed and converted to silanol groups.
- the temperature of the hydrolysis reaction is preferably about 30 to 200 ° C, more preferably about 100 to 160 ° C.
- the hydrolysis reaction time is preferably about 0.5 to 20 hours. 1 to about LO time is more preferable. If the temperature and time are within the above ranges, the hydrolysis reaction proceeds sufficiently and the polymerized alkyldisilane compound does not desorb!
- the amount of water used is preferably about 0.1 to about LO in terms of the weight ratio of water to the alkyldisilane compound (water Z alkyldisilan compound), more preferably about 0.1 to 2. If it is the said range, a hydrolysis reaction will fully advance and dehydration does not require a long time.
- the modified silica gel thus obtained may be further chemically modified.
- the reaction solution after the hydrolysis reaction may be used as it is for the next chemical modification reaction.
- V ⁇ may be taken out of the solid, washed and dried, and then subjected to the next chemical modification reaction.
- the second chemical modification reaction is performed by reacting the modified silica gel with at least one alkyl monosilane compound represented by the general formula [III].
- the functional group derived from the alkyl monosilane compound is introduced into the silanol group generated by hydrolysis of the alkyl disilane compound and the silanol group remaining on the surface of the silica gel.
- R 2 is preferably an alkyl group having 4 to 30 carbon atoms because it is easily available. Usually, an octadecyl group, an octyl group or a butyl group is used.
- the compounds of general formula [III] are typically octadecyldimethylchlorosilane, octadecyldimethylethoxysilane, octyldimethylchlorosilane, octyldimethylethoxysilane, butyldimethylchlorosilane. Orchid, butyldimethylethoxysilane and the like.
- the conditions of the second chemical modification reaction using the alkyl monosilane compound of the general formula [III] are not particularly limited, and can be performed under known conditions. Usually, the reaction may be carried out by heating the modified silica gel and the alkylmonosilane compound in a solvent.
- the reaction temperature is preferably about 60 to 200 ° C, more preferably about 100 to 160 ° C.
- the reaction time is preferably about 0.5 to 20 hours, more preferably about 3 to 10 hours.
- the type of the solvent is not particularly limited! However, aromatic carbonization such as benzene, toluene, xylene, and mesitylene, which does not react with the alkyl monosilane compound and is stable at the reaction temperature. Hydrogen, substituted aromatic compounds such as dichlorobenzene, and the like are preferable.
- the amount of the alkyl monosilane compound used is preferably about 0.01 to 10 in terms of the weight ratio of the alkyl monosilane compound to the silica gel (alkyl monosilane compound Z silica gel). More preferred.
- the silica gel here is a raw silica gel before being modified with an alkyldisilane compound.
- the chemical modification reaction is preferably performed in the presence of a basic compound such as pyridine, tryptylamine, or imidazole.
- the alkyl monosilane compound of the general formula [III] includes, for example, an alkyl group having 4 or more carbon atoms and is sterically large, some silanol groups may remain.
- the second alkyl monosilane compound having 1 to 3 carbon atoms of the alkyl group in the general formula [III] is further reacted to convert the unreacted silanol group into the first group. Modify with the alkyl monosilane compound of 2 to perform so-called end-cabbing.
- a part or all of the silanol group force on the surface of the modified silica gel of the present invention is modified with the compound represented by the above general formula [III], or R in the above general formula [III] 2 is modified with a compound having an alkyl group having 4 to 30 carbon atoms, and the above general formula [III]
- R 2 is an alkyl group having 1 to 3 carbon atoms
- the modified silica gel of the present invention has at least one surface selected from the group consisting of the compound represented by the above general formula [I] and the compound power represented by the above general formula [II].
- the modified silica gel of the present invention includes at least one selected from the group consisting of silica gel, a compound represented by the above general formula [I], and a compound power represented by the above general formula [II].
- the first step in which the silanol group of the silica gel is modified with the alkyl disilane compound by reacting with the alkyl disilane compound, and the reaction product of the first step is reacted with water to produce the alkyl disilane compound.
- a second step of polymerizing or copolymerizing the product is performed in which the silanol group of the silica gel is modified with the alkyl disilane compound by reacting with the alkyl disilane compound.
- a second step of polymerizing or copolymerizing the product.
- the modified silica gel of the present invention is usually bonded to the above polymer or copolymer by a siloxane bond formed by condensation.
- the weight ratio of the polymer or copolymer to the silica gel is preferably about 0.01 to 10, more preferably about 0.1 to 1.
- the weight ratio of the polymer or copolymer to the silica gel is approximately the same as the weight ratio of the alkyldisilane compound of general formula [I] or Z and general formula [ ⁇ ] to the silica gel at the time of production.
- the thickness of the polymer or copolymer covering the silica gel surface is usually about 2 to 30 A, especially 2 to: LO A It will be moderate.
- the thickness of the polymer or copolymer film is a value measured by the BET method using an automatic specific surface area Z pore size distribution measuring device.
- a modified silica gel having a carbon element ratio of about 0.5 to 10%, particularly about 1 to 5% by elemental analysis is obtained.
- the carbon element ratio in the present invention is a value obtained by elemental analysis by a combustion method.
- the weight ratio of the above-mentioned polymer or copolymer, the thickness of the polymer or copolymer, and the carbon element ratio are within the ranges, the effect of improving alkali resistance can be sufficiently obtained.
- the above range Therefore, when the polymer or copolymer layer has an appropriate thickness, and thus the silica gel pore size is appropriate, and it is used as a chromatographic support, the compound to be analyzed easily enters the pores of the silica gel and is sufficiently separated. To be done.
- the silanol group inside the polymer or copolymer layer produced by hydrolysis can be sufficiently modified with an alkyl monosilane compound as described later. That is, there is no problem due to steric hindrance in the modification reaction.
- the modified silica gel of the present invention has a force that is modified with a compound in which R 2 is 1 to 30 carbon atoms in the general formula [III] of a part or all of the surface of the silanol group. Further, R 2 may be modified with a compound having 4 to 30 carbon atoms, and further may be modified with a compound having R 2 having 1 to 3 carbon atoms in the general formula [III].
- This two-stage modified silica gel reacts the reaction product of the second step with the alkyl monosilane compound represented by the general formula [III] in addition to the first and second steps described above. Or the reaction product of the second step and an alkylmonosilane compound in which R 2 is a carbon number of 4 to 30 in the general formula [III], and the reaction product is further reacted in the general formula [III] It is obtained by a method including a third step in which R 2 is reacted with an alkyl monosilane compound having 1 to 3 carbon atoms and the remaining silanol group is modified with the alkyl monosilane compound.
- the weight ratio of the alkyl monosilane compound to the silica gel is preferably about 0.01 to 10, more preferably about 0.1 to 1.
- the weight ratio of the alkyl monosilane compound to the silica gel is almost the same as the weight ratio of the alkyl monosilane compound of general formula [III] or Z and general formula [IV] to the silica gel at the time of production.
- the ratio of carbon element by elemental analysis is usually about 5 to 30%, particularly about 10 to 25%, and the two-stage modified silica genore. Become.
- the chromatographic support of the present invention contains the above-described modified silica gel of the present invention.
- the type of chromatography is not particularly limited. Any of column chromatography, thin layer chromatography and the like may be used. Further, any of partition chromatography, adsorption chromatography, gel permeation chromatography, ion exchange chromatography and the like may be used.
- a modified silica gel obtained by modifying the silanol group of silica gel with an alkyldisilane compound and then polymerizing or copolymerizing the alkyl disilane compound by adding water, silanol groups are generated on the surface by hydrolysis.
- This one-stage modified silica gel can be suitably used, for example, as a carrier for normal phase partition chromatography.
- This one-stage modified silica gel has better alkali resistance than the raw silica gel because it is covered with a polymer containing carbon chains.
- the two-stage modified silica gel obtained by modifying the residual silanol group of the first-stage modified silica gel with an alkyl monosilane compound has high hydrophobicity, and thus can be suitably used, for example, as a carrier for reverse phase partition chromatography. .
- the column for liquid chromatography of the present invention is a column in which the modified silica gel of the present invention is packed.
- sample analysis or fractionation method of the present invention uses the chromatography carrier of the present invention to analyze (qualitatively, quantitatively) or fractionate the sample by any chromatography. Is a method of sorting.
- the modified silica gel of the present invention is used as a chromatography carrier, the separation performance does not deteriorate even when an alkaline solution is passed, and the life is long.
- the modified silica gel of the present invention maintains the excellent separation performance of silica gel as a chromatographic carrier and is excellent in resistance to an alkaline solution. Therefore, even when used under alkaline conditions, the separation performance is maintained for a long time.
- a modified silica gel having excellent alkali resistance can be produced with simple steps, simple reaction equipment and low cost.
- FIG. 1 After 2 hours of passing an alkaline mobile phase through each of the columns packed with the packing material for liquid chromatography obtained in Examples 1 to 6 and Comparative Examples 1 and 2, 4 It is a figure which shows the change from the initial state of the elution time of the naphthalene peak as a result of having performed the column standard test after 7 hours after 11 hours.
- FIG. 2 (A) is a liquid chromatography chart in which a column standard test was performed on the liquid chromatography packing material obtained in Example 1 before passing through an alkali, and (B) is an example. 2 is a liquid chromatography chart in which a column standard test was conducted after 11 hours of alkali passage using the liquid chromatography packing material obtained in 1.
- FIG. 3 (A) is a liquid chromatography chart in which a column standard test was conducted before passing through an alkali for the liquid chromatography packing material obtained in Comparative Example 1, and (B) is a comparative example. 2 is a liquid chromatography chart in which a column standard test was conducted after 11 hours of alkali passage using the liquid chromatography packing material obtained in 1.
- FIG. 4 is a graph showing the relationship between the amount of alkyldisilane compound used and the distribution of silica gel pore diameter.
- elemental analysis was performed by a combustion method using an organic element analyzer (CHN Coda-ichi MT-6M; Yanagimoto Works), and the carbon element ratio was calculated.
- CHN Coda-ichi MT-6M organic element analyzer
- BET method multi-point method
- AUTOSO RB-1-KR fully automatic gas adsorption amount measuring device
- pore diameter of silica gel The pore diameter of the modified silica gel was measured, and one half of the difference was taken as the thickness of the polymer coating.
- Daiso gel SP-120-5P spherical high-purity silica gel, average particle size 5 m, pore size 120 A, surface area 300 m 2 Zg
- 5.5 g of bis (trichlorosilyl) methane and 9.4 g of pyridine were added and heated to reflux for 4 hours.
- the hydrolysis reaction was completed by refluxing for a while. After cooling to room temperature, azeotropic dehydration was performed again, 14 octadecyldimethylchlorosilane and 3.5 g of pyridine were collected and heated to reflux for 4 hours.
- Example 1 bis (trichlorosilyl) ethane was used in place of bis (trichlorosilyl) methane as the alkyldisilane compound.
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle diameter 5 m, pore diameter 120 A, surface area 300 m 2 / g
- azeotropic dehydration in 150 ml toluene under an atmosphere bis (trichlorosilyl) ethane (5.8 g) and pyridine (9.4 g) were added, and the mixture was heated to reflux for 4 hours. After cooling to room temperature, 2. Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction. After cooling to room temperature, azeotropic dehydration was again performed, 14.
- octadecyldimethylchlorosilane and 3.5 g of pyridine were added, and the mixture was heated to reflux for 4 hours. After cooling to room temperature, 3.9 g of trimethylchlorosilane and 2.9 g of pyridine were added for end cubbing and refluxed for 4 hours to complete the reaction. After completion of the reaction, the reaction mixture was cooled to room temperature, filtered, and washed 10 times with 200 ml of methanol. Thereafter, it was dried under reduced pressure at 70 ° C. for 24 hours to obtain a packing material for liquid chromatography.
- Example 1 bis (trichlorosilyl) propane was used in place of bis (trichlorosilyl) methane as the alkyldisilane compound.
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle diameter of 5 m, pore diameter of 120 A, surface area of 300 m 2 / g
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle diameter of 5 m, pore diameter of 120 A, surface area of 300 m 2 / g
- azeotropic dehydration in 150 ml toluene under an atmosphere 6. lg of bis (trichlorosilyl) propane and 9.4 g of pyridine were added and heated to reflux for 4 hours. After cooling to room temperature, 2.Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction. After cooling to room temperature Azeotropic dehydration was carried out again, 14.
- Example 1 bis (trichlorosilyl) hexane was used in place of bis (trichlorosilyl) methane as the alkyldisilane compound.
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size of 5 m, pore size of 120 A, surface area of 300 m 2 / g
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size of 5 m, pore size of 120 A, surface area of 300 m 2 / g
- azeotropic dehydration in 150 ml toluene under an atmosphere 6.9 g of bis (trichlorosilyl) hexane and 9.4 g of pyridine were added and heated to reflux for 4 hours. After cooling to room temperature, 2. Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction.
- Example 1 bis (trichlorosilyl) octane was used in place of bis (trichlorosilyl) methane as the alkyldisilane compound.
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size of 5 m, pore size of 120 A, surface area of 300 m 2 / g
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size of 5 m, pore size of 120 A, surface area of 300 m 2 / g
- 7.4 g of bis (trichlorosilyl) octane and 9.4 g of pyridine were added and heated to reflux for 4 hours.
- 2.Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction.
- Azeotropic dehydration was carried out again, 14.
- Example 1 bis (trichlorosilyl) methane was substituted as the alkyldisilane compound.
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size 5 m, pore size 120 A, surface area 300 m 2 / g
- azeotropic dehydration in 150 ml toluene under atmosphere bis (methyldichlorosilyl) ethane 5.
- Og and pyridine 5.5 g were added and heated to reflux for 4 hours. After cooling to room temperature, 2. Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction.
- a conventional modified silica gel in which an octadecyl group and a methyl group were directly introduced into a silica gel was prepared without using an alkyldisilane compound of the general formula [I] or [II].
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size 5 m, pore size 120 A, surface area 300 m 2 / g
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle size 5 m, pore size 120 A, surface area 300 m 2 / g
- 14. lg of octadecyldimethylchlorosilane and 3.5 g of pyridine were added and heated to reflux for 4 hours.
- reaction mixture was cooled to room temperature, filtered, and washed 10 times with 200 ml of methanol. Thereafter, it was dried under reduced pressure at 70 ° C. for 24 hours to obtain a packing material for liquid chromatography.
- a two-stage modified silica gel was prepared using methyltrichlorosilane instead of the alkyldisilane compound of general formula [I] or [II].
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle diameter 5 m, pore diameter 120 A, surface area 300 m 2 / g
- Daiso Gel SP-120-5P spherical high-purity silica gel, average particle diameter 5 m, pore diameter 120 A, surface area 300 m 2 / g
- 2.9 g of methyltrichlorosilane and 4.7 g of pyridine were added and heated to reflux for 4 hours.
- 2. Og of pure water was added and refluxed for 2 hours to complete the hydrolysis reaction.
- azeotropic dehydration was performed again to obtain 14.
- Each of the packing materials for liquid chromatography obtained in Examples 1 to 6 and Comparative Examples 1 to 2 was packed into a stainless steel column having an inner diameter of 4.6 mm and a length of 150 mm by a slurry method.
- Retention rate (%) [(Naphthalene elution time after alkali passage) Z (Naphthalene elution time before alkali passage)] X 100
- Figure 1 shows the changes in the elution time of the naphthalene peak from the initial state. As shown in Fig. 1, when alkaline solution is passed through the column, the peak dissolution time gradually becomes faster. This is considered because silica gel itself melt
- the alkyl disilane compound shown in the general formula [I] or the general formula [II] is used to chemically modify the silica gel surface, and then the octadecyl group is used.
- the change in the elution time of the naphthalene peak is small even when an alkaline solution is passed, and the maintenance rate of the peak time is high. That is, the alkali resistance is high.
- the surface of the silica gel is chemically modified using an alkyldisilane compound having a hydrocarbon chain inside the structure, such as an alkyldisilane compound of the general formula [I] or [II]. It can be seen that the alkali resistance is greatly improved by performing.
- FIG. 2 Chromatographic chart of alkaline mobile phase before and after the liquid electrolyte
- FIG. 2 The durography charts are shown in Figs. (A) in FIG. 2 is a chromatography chart before the alkaline mobile phase is passed through the packing material of Example 1, and (B) in FIG. 2 is a flow through the alkaline mobile phase through the packing material of Example 1. It is a chromatography chart after doing.
- Fig. 3 (A) is a chromatography chart before passing the alkaline mobile phase through the packing material of Comparative Example 1
- Fig. 3 (B) shows the flow of the alkaline mobile phase through the packing material of Comparative Example 1. It is a later chromatographic chart.
- Example 2 the weight ratio of bis (trichlorosilyl) ethane and silica gel used (bis (trichlorosilyl) ethane Z silica gel) was 0.19. When this ratio was 0.10, and In each case of 0.38, the same procedure as in Example 2 was followed until the third step to obtain a modified silica gel.
- Figure 4 shows the pore diameter distributions of the raw silica gel (Daiiso-gel SP-120-5P) and the above three modified silica gels.
- the distribution curve of the pore diameter shifts in the direction of decreasing the diameter as the weight ratio of bis (trichlorosilyl) ethane Z silica gel increases, indicating that a polymer film is uniformly formed in the pores.
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US12/294,554 US20090206034A1 (en) | 2006-03-29 | 2007-03-28 | Modified silica gel and use thereof |
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