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    • 8. 发明授权
    • Preparation of ABO.sub.3 compounds from mixed metal aromatic
coordination complexes
    • 从混合金属芳族配位络合物制备ABO3化合物
    • US4946810A
    • 1990-08-07
    • US405335
    • 1989-09-11
    • Robert H. Heistand, IILawrence G. Duquette
    • Robert H. Heistand, IILawrence G. Duquette
    • C01B13/18C01G1/02C01G23/00C04B35/465C04B35/468
    • C01B13/185C01G1/02C01G23/006C04B35/465C04B35/4682C01P2002/34C01P2002/72C01P2002/88C01P2004/51
    • Methods of producing ABO.sub.3 compounds in which A represents a first metal ion and B represents a second metal ion from mixed metal coordination complexes are disclosed. The methods involve reacting compounds serving as a source of the B metal ion with a substituted aromatic compound, in solution, and thereafter reacting the metal coordination complex formed with a compound serving as a source of the A metal, in solution. An example is the reaction of titanium tetraisopropoxide with catechol to form a titanium catecholate coordination complex which is thereafter reacted with barium hydroxide octahydrate to form a pentamethanol barium triscatecholatotitanate mixed metal coordination complex which can be calcined at elevated temperatures to produce the ABO.sub.3 compound, barium titanate (BaTiO.sub.3), which is known to have outstanding dielectric, ferroelectric and piezoelectric properties. Portions of the A and/or B ions can be substituted with other metals.
    • 公开了生产ABO3化合物的方法,其中A代表第一金属离子,B代表来自混合金属配位络合物的第二金属离子。 所述方法包括将作为B金属离子源的化合物与取代的芳族化合物在溶液中反应,然后使与形成的作为A金属源的化合物形成的金属配位络合物在溶液中反应。 一个例子是四异丙醇钛与儿茶酚的反应形成儿茶酚酸钛配位络合物,然后与氢氧化钡八水合物反应,形成五甲醇钡三邻氨基苯甲酸钛酸盐混合金属配位络合物,其可以在高温下煅烧以产生ABO 3化合物,钛酸钡 (BaTiO 3),其已知具有优异的介电,铁电和压电性能。 A和/或B离子的一部分可以被其它金属取代。