WO2011062256A1 - Mtw型ゼオライトの製造方法 - Google Patents
Mtw型ゼオライトの製造方法 Download PDFInfo
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- WO2011062256A1 WO2011062256A1 PCT/JP2010/070663 JP2010070663W WO2011062256A1 WO 2011062256 A1 WO2011062256 A1 WO 2011062256A1 JP 2010070663 W JP2010070663 W JP 2010070663W WO 2011062256 A1 WO2011062256 A1 WO 2011062256A1
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000010457 zeolite Substances 0.000 title claims abstract description 85
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000013078 crystal Substances 0.000 claims abstract description 45
- 239000011541 reaction mixture Substances 0.000 claims abstract description 43
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 21
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003513 alkali Substances 0.000 claims abstract description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 7
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 7
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 20
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 17
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000002156 mixing Methods 0.000 abstract description 8
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000000047 product Substances 0.000 description 14
- 238000002441 X-ray diffraction Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000011734 sodium Substances 0.000 description 12
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 229910001413 alkali metal ion Inorganic materials 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- -1 methyltriethylammonium ion Chemical class 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 229910001415 sodium ion Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 4
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VBQDSLGFSUGBBE-UHFFFAOYSA-N benzyl(triethyl)azanium Chemical compound CC[N+](CC)(CC)CC1=CC=CC=C1 VBQDSLGFSUGBBE-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- IPLONMMJNGTUAI-UHFFFAOYSA-M lithium;bromide;hydrate Chemical compound [Li+].O.[Br-] IPLONMMJNGTUAI-UHFFFAOYSA-M 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000011973 solid acid Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 2
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 2
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/42—Type ZSM-12
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/7034—MTW-type, e.g. ZSM-12, NU-13, TPZ-12 or Theta-3
Definitions
- the present invention relates to a method for producing MTW-type zeolite from a reaction mixture not using an organic compound by adding MTW-type zeolite containing no organic compound as a seed crystal.
- a general method is a method in which an organic ammonium ion such as tetraethylammonium ion, methyltriethylammonium ion or benzyltriethylammonium ion is used as SDA.
- an organic ammonium ion such as tetraethylammonium ion, methyltriethylammonium ion or benzyltriethylammonium ion is used as SDA.
- alkali metal ions such as sodium or lithium is essential.
- Patent Documents 1 to 3 Such a method is described, for example, in Patent Documents 1 to 3 below. According to these methods, an MTW type zeolite having a SiO 2 / Al 2 O 3 ratio of 20 or more can be obtained.
- the SDA is expensive and most of the SDA in the mother liquor may be decomposed after the MTW-type zeolite crystallization is completed. Moreover, since these SDA are taken in into the crystal
- the conventional MTW-type zeolite production method is a method of adding an alkali metal ion simultaneously with using an organic ammonium ion as SDA as described above.
- SDA organic ammonium ion
- no method has been known for producing MTW-type zeolite by using only alkali metal ions without using SDA.
- the present inventors have found a method for producing an MTW zeolite that does not use SDA by calcining an MTW zeolite synthesized using SDA, removing SDA, and using this as a seed crystal. Completed.
- FIG. 1 is an X-ray diffraction diagram after firing an MTW-type zeolite having a SiO 2 / Al 2 O 3 ratio for seed crystal of 50.6 synthesized in Reference Example 1.
- FIG. 2 is an X-ray diffraction diagram after calcining the MTW-type zeolite having a SiO 2 / Al 2 O 3 ratio for seed crystal of 101.2 synthesized in Reference Example 1.
- FIG. 3 is an X-ray diffraction pattern of the MTW zeolite synthesized in Example 1.
- FIG. 4 is an X-ray diffraction pattern of the MTW zeolite synthesized in Example 2.
- FIG. 5 is an X-ray diffraction pattern of the MTW zeolite synthesized in Example 3.
- the SiO 2 / Al 2 O 3 ratio of the aluminosilicate skeleton is preferably in the range of 12 to 200.
- the X-ray diffraction pattern of the MTW zeolite synthesized according to the present invention is essentially the same as the X-ray diffraction pattern of the MTW zeolite described in Non-Patent Document 2 described above. From this, it is judged that the structural characteristics of the MTW type zeolite synthesized according to the present invention are the same as those of the conventional MTW type zeolite synthesized using SDA.
- Another feature of the production method of the present invention is the use of seed crystals.
- a seed crystal a MTW-type zeolite produced by a conventional method, that is, a method using SDA is calcined to remove organic substances.
- Methods for synthesizing MTW zeolite according to conventional methods are described in, for example, Patent Documents 1 to 3 described above, and are well known to those skilled in the art.
- the type of SDA to be used is not limited.
- alkali metal ions it is preferable to add alkali metal ions simultaneously with the addition of SDA.
- alkali metal ions it is preferable to use sodium and / or lithium ions.
- the MTW-type zeolite obtained according to the present invention can be used as a seed crystal.
- the MTW-type zeolite obtained by the present invention does not essentially contain an organic compound, so that when it is used as a seed crystal, there is an advantage that it is not necessary to perform a calcination treatment in advance.
- the amount of seed crystals added is in the range of 0.1 to 20% by weight, preferably in the range of 1 to 10% by weight, based on the silica component in the reaction mixture. On the condition that the addition amount is within this range, the addition amount of the seed crystal is preferably small, and the addition amount is determined in consideration of the reaction rate and the effect of suppressing impurities.
- the reaction mixture to which the seed crystal is added is obtained by mixing a silica source, an alumina source, an alkali source, a lithium source, and water so as to have a composition represented by the molar ratio shown below. If the composition of the reaction mixture is outside this range, the target MTW zeolite cannot be obtained, as is apparent from the results of comparative examples described later.
- silica source used for obtaining the reaction mixture having the above molar ratio examples include silica itself and silicon-containing compounds capable of generating silicate ions in water. Specific examples include wet method silica, dry method silica, colloidal silica, sodium silicate, aluminosilicate gel, and the like. These silica sources can be used alone or in combination of two or more. Of these silica sources, use of silica (silicon dioxide) is preferred in that the desired zeolite can be obtained without unnecessary by-products.
- the alkali source for example, sodium hydroxide can be used.
- sodium silicate is used as the silica source or sodium aluminate is used as the alumina source
- sodium which is an alkali metal component contained therein is simultaneously regarded as NaOH and is also an alkali component.
- NaOH sodium hydroxide
- lithium salts such as halides such as chloride, bromide and iodide, and inorganic acid salts such as nitrate and sulfate are preferably used.
- soluble organic salts may be used.
- lithium hydroxide may be used as one of the lithium ion sources. In that case, since lithium hydroxide acts as an alkali source simultaneously with the lithium ion source, it is necessary to consider optimization of the total alkali amount together with the Li 2 O / (Na 2 O + Li 2 O) ratio.
- the reaction mixture containing seed crystals is placed in a closed container and heated to react to crystallize the MTW zeolite.
- This reaction mixture does not contain SDA. Crystallization proceeds sufficiently even when the sealed container is left standing.
- stirring is performed in order to make the reaction mixture and temperature uniform during heating, mixing by a stirring blade or mixing by rotation of a container may be performed. What is necessary is just to adjust stirring intensity
- the heating temperature is 100 to 200 ° C., preferably 120 to 180 ° C., and heating is performed under an autogenous pressure.
- the temperature is lower than 100 ° C., the crystallization rate is extremely slow, so that the production efficiency of the MTW zeolite is deteriorated.
- the temperature exceeds 200 ° C., an autoclave having a high pressure resistance is required, which is not only economical, but is also not preferable because the generation rate of impurities increases.
- the heating time is not critical in this production method, and it may be heated until an MTW-type zeolite with sufficiently high crystallinity is produced. In general, MTW-type zeolite with satisfactory crystallinity can be obtained by heating for about 5 to 500 hours.
- crystals of MTW type zeolite are obtained.
- the produced crystal powder is separated from the mother liquor by filtration, then washed with water or warm water and dried. Since the MTW-type zeolite does not contain an organic substance in a dry state, it is not necessary to calcinate and can be used as an adsorbent if dehydration is performed. Further, when MTW type zeolite is used as a solid acid catalyst, it can be used as H + type by, for example, exchanging Na + ions and Li + ions in the crystal with NH 4 + ions and then firing them. .
- the MTW-type zeolite obtained by this production method can be suitably used, for example, as an adsorptive separation agent in various industrial fields or a catalyst in the petrochemical industry, utilizing its large pore diameter, pore volume and solid acid characteristics. it can.
- Powder X-ray diffractometer manufactured by Mac Science Co., Ltd., powder X-ray diffractometer MO3XHF 22 , using Cuk ⁇ ray, voltage 40 kV, current 30 mA, scan step 0.02 °, scan speed 2 ° / min
- Composition analyzer ICP-AES LIBERTY Series II manufactured by Varian
- Tetraethylammonium hydroxide is used as SDA, aluminum hydroxide is used as the alumina source, lithium bromide is used as the lithium source, fine powdered silica (Cab-O-sil, M-5) is used as the silica source, water is further added, and 8TEA 2 the O ⁇ 3.5Li 2 O ⁇ Al 2 O 3 ⁇ 40SiO 2 ⁇ 640H 2 reaction mixture O composition was prepared.
- the reaction mixture was placed in a sealed container and heated at 160 ° C. for 5 days.
- the product was an MTW type zeolite. This was fired at 550 ° C. for 10 hours while circulating air in an electric furnace to synthesize seed crystal 1 containing no organic matter.
- the SiO 2 / Al 2 O 3 ratio after firing was 50.6.
- the X-ray diffraction pattern of this MTW zeolite is shown in FIG.
- Tetraethylammonium hydroxide was used as the SDA, sodium aluminate as the alumina source, fine powdered silica (Cab-O-sil, M-5) as the silica source, and water added to obtain 9.8 TEA 2 O.0.79Na.
- a reaction mixture having a composition of 2 O ⁇ Al 2 O 3 ⁇ 80SiO 2 ⁇ 1040H 2 O was prepared. The reaction mixture was placed in a sealed container and heated at 160 ° C. for 8 days. The product was an MTW type zeolite. This was fired at 550 ° C. for 10 hours while circulating air in an electric furnace to synthesize seed crystal 2 containing no organic matter. The SiO 2 / Al 2 O 3 ratio after firing was 101.2. The X-ray diffraction pattern of this MTW type zeolite is shown in FIG.
- Example 1 Dissolve 0.30 g of sodium hydroxide in 5.8 g of distilled water. Further, 0.31 g of lithium bromide monohydrate, 0.16 g of aluminum hydroxide, 0.12 g of seed crystal 1, silica (Cab-O-Sil M5 ) 1.20 g was added in order and stirred uniformly to prepare a reaction mixture having the composition described in Table 1. The reaction mixture was placed in a sealed container and heated at 140 ° C. for 7 days. The product was isolated by filtration, washed with water and dried at 60 ° C. As can be seen from the X-ray diffraction pattern shown in FIG. 3, this product was an MTW-type zeolite containing no impurities. The results of the composition analysis were as shown in Table 1.
- Example 3 A reaction mixture having the composition described in Table 1 was prepared using the same raw materials as in Example 1 except that the MTW-type zeolite seed crystal 2 synthesized in Reference Example 2 was used, and heated under the conditions described in the same table. As can be seen from the X-ray diffraction pattern shown in FIG. 5, the product was an MTW-type zeolite containing no impurities. The composition of the product was as described in Table 1.
- Example 4 A reaction mixture having the composition described in Table 1 was prepared using the same raw materials as in Example 1 except that the amount of seed crystal 1 added was 1%, and heated under the conditions described in the same table. As a result, the product and its composition were as shown in Table 1.
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Abstract
Description
(1)以下に示すモル比で表される組成の反応混合物となるように、シリカ源、アルミナ源、アルカリ源、リチウム源、及び水を混合し、
SiO2/Al2O3=12~200
Na2O/SiO2=0.1~0.3
Li2O/(Na2O+Li2O)=0.05~0.5
H2O/SiO2=10~50
(2)SiO2/Al2O3比が10~500である有機化合物を含まないMTW型ゼオライトを種結晶として用い、これを前記反応混合物中のシリカ成分に対して0.1~20重量%の割合で該反応混合物に添加し、
(3)前記種結晶が添加された前記反応混合物を100~200℃で密閉加熱することを特徴とするMTW型ゼオライトの製造方法を提供するものである。
・SiO2/Al2O3=12~200
・Na2O/SiO2=0.1~0.3
・Li2O/(Na2O+Li2O)=0.05~0.5
・H2O/SiO2=10~50
・SiO2/Al2O3=12~150
・Na2O/SiO2=0.12~0.25
・Li2O/(Na2O+Li2O)=0.1~0.4
・H2O/SiO2=12~30
組成分析装置:(株)バリアン製、ICP-AES LIBERTY SeriesII
テトラエチルアンモニウムヒドロキシドをSDAとして用い、水酸化アルミニウムをアルミナ源、臭化リチウムをリチウム源、微粉状シリカ(Cab-O-sil、M-5)をシリカ源とし、更に水を加えて、8TEA2O・3.5Li2O・Al2O3・40SiO2・640H2Oの組成の反応混合物を調製した。この反応混合物を密閉容器中に入れ、160℃で5日間加熱した。その生成物はMTW型ゼオライトであった。これを電気炉中で空気を流通しながら550℃で10時間焼成して、有機物を含まない種結晶1を合成した。焼成後のSiO2/Al2O3比は50.6であった。このMTW型ゼオライトのX線回折図を図1に示す。
テトラエチルアンモニウムヒドロキシドをSDAとして用い、アルミン酸ナトリウムをアルミナ源、微粉状シリカ(Cab-O-sil、M-5)をシリカ源とし、更に水を加えて、9.8TEA2O・0.79Na2O・Al2O3・80SiO2・1040H2Oの組成の反応混合物を調製した。この反応混合物を密閉容器中に入れ、160℃で8日間加熱した。その生成物はMTW型ゼオライトであった。これを電気炉中で空気を流通しながら550℃で10時間焼成して、有機物を含まない種結晶2を合成した。焼成後のSiO2/Al2O3比は101.2あった。このMTW型ゼオライトのX線回折図を図2に示す。
蒸留水5.8gに水酸化ナトリウム0.30gを溶かし、更に臭化リチウム一水和物0.31g、水酸化アルミニウム0.16g、種結晶1を0.12g、シリカ (Cab-O-Sil M5)1.20gの順に加え均一に攪拌して表1に記載した組成の反応混合物を調製した。この反応混合物を密閉容器中に入れ、140℃で7日間加熱した。生成物をろ過により分離し、水で洗浄した後60℃で乾燥した。この生成物は、図3に示すX線回折図から判るように、不純物を含まないMTW型ゼオライトであった。組成分析の結果は表1に示すとおりであった。
実施例1と同じ原料を用いて、表1に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。生成物は図4に示すX線回折図から判るように、不純物を含まないMTW型ゼオライトであった。生成物は表1に記載のとおりであった。
参考例2で合成したMTW型ゼオライト種結晶2を用いた以外は実施例1と同じ原料を用いて、表1に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。生成物は図5に示すX線回折図から判るように、不純物を含まないMTW型ゼオライトであった。生成物の組成は表1に記載のとおりであった。
種結晶1の添加量を1%とした以外は実施例1と同じ原料を用いて、表1に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。その結果、生成物及びその組成は表1に記載のとおりであった。
実施例1と原料を用いて、表1に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。その結果、生成物及びその組成は表1記載のとおりであった。
臭化リチウム一水和物を添加しないこと以外は実施例1で使用したものと同じ原料と種結晶1を用いて、表2に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。その結果、生成物は表2に記載のとおりであった。
実施例1で使用したものと同じ原料と種結晶1を用いて、表2に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。その結果、生成物は表2に記載のとおりであった。
種結晶を添加しないこと以外は実施例1で使用したものと同じ原料を用いて、表2に記載した組成の反応混合物を調製し、同表に記載の条件で加熱した。その結果、生成物は表2に記載のとおりであった。
Claims (2)
- (1)以下に示すモル比で表される組成の反応混合物となるように、シリカ源、アルミナ源、アルカリ源、リチウム源、及び水を混合し、
SiO2/Al2O3=12~200
Na2O/SiO2=0.1~0.3
Li2O/(Na2O+Li2O)=0.05~0.5
H2O/SiO2=10~50
(2)SiO2/Al2O3比が10~500である有機化合物を含まないMTW型ゼオライトを種結晶として用い、これを前記反応混合物中のシリカ成分に対して0.1~20重量%の割合で該反応混合物に添加し、
(3)前記種結晶が添加された前記反応混合物を100~200℃で密閉加熱することを特徴とするMTW型ゼオライトの製造方法。 - 種結晶として、請求項1記載の製造方法で製造されたベータ型ゼオライトを用いることを特徴とする請求項1記載の製造方法。
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KR1020127012719A KR101729356B1 (ko) | 2009-11-20 | 2010-11-19 | Mtw 형 제올라이트의 제조 방법 |
CN201080052299.5A CN102612492B (zh) | 2009-11-20 | 2010-11-19 | Mtw型沸石的制造方法 |
US13/509,677 US9333495B2 (en) | 2009-11-20 | 2010-11-19 | Method for producing MTW-type zeolite |
DE112010004511.9T DE112010004511B4 (de) | 2009-11-20 | 2010-11-19 | Verfahren zum herstellen eines zeoliths vom mtw-typ |
US15/079,998 US9840423B2 (en) | 2009-11-20 | 2016-03-24 | Method for producing MTW-type zeolite |
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US20160023912A1 (en) * | 2014-07-23 | 2016-01-28 | Chevron U.S.A. Inc. | SYNTHESIS OF HIGH SILICA ZEOLITE VIA INTERZEOLITE TRANSFORMATION WITHOUT OSDAs |
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JP5351216B2 (ja) * | 2010-07-01 | 2013-11-27 | 日本化学工業株式会社 | ゼオライトの製造方法 |
WO2018093510A1 (en) * | 2016-11-17 | 2018-05-24 | Chevron U.S.A. Inc. | Synthesis of mtw framework type zeolites via interzeolite transformation |
RU2719153C2 (ru) * | 2018-10-04 | 2020-04-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный университет имени М.В. Ломоносова" (МГУ) | Способ получения цеолита структурой mtw |
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