发明名称 |
Process for producing a composition which includes perovskite compounds |
摘要 |
A process for producing a composition which includes a perovskite compound, the process comprising: (a) subjecting a mixture of a hydroxide of at least one A group element selected from the group consisting of Mg, Ca, Sr, Ba, Pb and rare earth elements and a hydroxide of at least one B group element selected from the group consisting of Ti, Zr, Hf and Sn, to the hydrothermal reaction in an aqueous reaction medium; (b) adding an insolubilizing agent to the resultant reaction mixture to insolubilize water-soluble compounds of the unreacted A group element dissolved in the aqueous medium so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; or (c) filtering, washing with water and drying the resultant reaction mixture to provide a solid reaction product, dispersing the reaction product in an aqueous medium to form a slurry, adding to the slurry a water-soluble compound of the A group element, and then adding to the slurry an insolubilizing agent to insolubilize the water-soluble compound of the A group element so as to adjust the ratio of the group A element to the group B element in a resulting composition to a desired A/B ratio; and (d) filtering, washing and drying the resultant mixture to provide the composition which includes the perovskite compound having the desired A/B ratio.
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申请公布号 |
US4643984(A) |
申请公布日期 |
1987.02.17 |
申请号 |
US19850758072 |
申请日期 |
1985.07.23 |
申请人 |
SAKAI CHEMICAL INDUSTRY CO., LTD. |
发明人 |
ABE, KAZUNOBU;AOKI, MASASHI;RIKIMARU, HIROAKI;ITO, TAKESHI;HIDAKA, KAZUHISA;SEGAWA, KAYOKO |
分类号 |
C04B35/00;C01G19/00;C01G21/00;C01G23/00;C01G25/00;C01G27/00;C04B35/468;C04B35/491;C04B35/493;(IPC1-7):C01G23/00;C04B35/46 |
主分类号 |
C04B35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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