JP4937637B2 - 蓚酸バリウムチタニルの製造方法及びチタン酸バリウムの製造方法 - Google Patents
蓚酸バリウムチタニルの製造方法及びチタン酸バリウムの製造方法 Download PDFInfo
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- JP4937637B2 JP4937637B2 JP2006138313A JP2006138313A JP4937637B2 JP 4937637 B2 JP4937637 B2 JP 4937637B2 JP 2006138313 A JP2006138313 A JP 2006138313A JP 2006138313 A JP2006138313 A JP 2006138313A JP 4937637 B2 JP4937637 B2 JP 4937637B2
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- titanyl oxalate
- barium
- barium titanyl
- molar ratio
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- 229910052788 barium Inorganic materials 0.000 title claims description 99
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 title claims description 84
- QKKWJYSVXDGOOJ-UHFFFAOYSA-N oxalic acid;oxotitanium Chemical compound [Ti]=O.OC(=O)C(O)=O QKKWJYSVXDGOOJ-UHFFFAOYSA-N 0.000 title claims description 79
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 title claims description 42
- 229910002113 barium titanate Inorganic materials 0.000 title claims description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 42
- 239000010936 titanium Substances 0.000 claims description 83
- 239000007788 liquid Substances 0.000 claims description 67
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 66
- 238000006243 chemical reaction Methods 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 27
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 27
- 235000006408 oxalic acid Nutrition 0.000 claims description 20
- 229910052719 titanium Inorganic materials 0.000 claims description 19
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 230000032683 aging Effects 0.000 claims description 16
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 10
- 229910001626 barium chloride Inorganic materials 0.000 claims description 10
- 239000012295 chemical reaction liquid Substances 0.000 claims description 6
- 238000001354 calcination Methods 0.000 description 23
- 239000000203 mixture Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 229910010293 ceramic material Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 4
- 238000010828 elution Methods 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000001384 succinic acid Substances 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- PWHCIQQGOQTFAE-UHFFFAOYSA-L barium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ba+2] PWHCIQQGOQTFAE-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- -1 oxalate ions Chemical class 0.000 description 2
- 150000003891 oxalate salts Chemical class 0.000 description 2
- GEVPUGOOGXGPIO-UHFFFAOYSA-N oxalic acid;dihydrate Chemical compound O.O.OC(=O)C(O)=O GEVPUGOOGXGPIO-UHFFFAOYSA-N 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- 238000004438 BET method Methods 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910052775 Thulium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002468 ceramisation Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- XFVGXQSSXWIWIO-UHFFFAOYSA-N chloro hypochlorite;titanium Chemical compound [Ti].ClOCl XFVGXQSSXWIWIO-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
(1)誘電体セラミック材料の原料として有用なBa/Tiのモル比が0.990〜0.999の蓚酸バリウムチタニルを得る上で、B液中の組成を特定範囲に設定し、A液の組成を適宜調製して目的とする蓚酸バリウムチタニルを得る方法である。この場合、A液として、塩化バリウム及び四塩化チタンを含み、塩化バリウムの含有量がBaとして「b」モル、四塩化チタンの含有量がTiとして「T1」モルである水溶液を調製する。B液として、蓚酸及び四塩化チタンを含み、蓚酸の含有量が「s」モル、四塩化チタンの含有量がTiとして「T2」モルである水溶液を調製する。A液のB液への添加を、添加後の反応液のBa/Tiモル比、即ち{b/(T1+T2)}がBa過剰の状態、好ましくは1.02以上1.20以下で、更にBaと蓚酸のモル比(b/s)が0.34〜0.54となるように行い反応させる(以下、「(1)の製法」と略記する。)。
塩化バリウム2水塩、四塩化チタン水溶液、蓚酸2水塩及び純水を用いて、表1に示す組成のA液及びB液を調製した。次いで、B液を60℃に加温保持し、A液を室温(25℃)で120分かけて攪拌下にB液に添加した。添加量は表1に示す通りである。添加完了後の反応液におけるTi、Ba、蓚酸イオンのモル比は表2に示す通りである。添加完了後、更に60℃で1時間攪拌下に熟成した。冷却後、濾過して蓚酸バリウムチタニルを回収した。
塩化バリウム2水塩、四塩化チタン水溶液、蓚酸2水塩及び純水を用いて、表1に示す組成のA液及びB液を調製した。次いで、B液を30℃に加温保持し、A液を室温(25℃)で120分かけて攪拌下にB液に添加した。添加量は表1に示す通りである。添加完了後の反応液におけるTi、Ba、蓚酸イオンのモル比は表2に示す通りである。添加完了後、更に30℃で1時間攪拌下に熟成した。冷却後、濾過して蓚酸バリウムチタニルを回収した。
実施例1〜6、比較例1、4で得られた蓚酸バリウムチタニル試料の5gを、大気中、800℃で5時間又は1000℃で5時間仮焼した。冷却後、解砕してそれぞれチタン酸バリウムの粉末を得た。得られたチタン酸バリウムの諸物性を表4に示した。BaとTiのモル比、平均粒径は前記と同様な方法で求めた。比表面積はBET法で求めた。
Claims (5)
- 四塩化チタン及び塩化バリウムを含む水溶液(A液)を、蓚酸及び四塩化チタンを含む水溶液(B液)に添加し平均粒径が100〜300μmの蓚酸バリウムチタニル粒子を生成させ、次いで50℃以上で熟成反応を行うことを特徴とする蓚酸バリウムチタニルの製造方法。
- 前記A液の前記B液への添加は、添加終了後の反応液中のTiとBaのモル比(Ba/Ti)が0.85〜0.98又は1.02〜1.20となるように行う請求項1記載の蓚酸バリウムチタニルの製造方法。
- 請求項1の方法によって製造された蓚酸バリウムチタニル。
- Tiに対するBaのモル比(Ba/Ti)が0.990〜0.999である請求項3記載の蓚酸バリウムチタニル。
- 四塩化チタン及び塩化バリウムを含む水溶液(A液)を、蓚酸及び四塩化チタンを含む水溶液(B液)に添加し平均粒径が100〜300μmの蓚酸バリウムチタニル粒子を生成させ、次いで50℃以上で熟成反応を行い、該熟成反応より得られる蓚酸バリウムチタニルを仮焼することを特徴とするチタン酸バリウムの製造方法。
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