发明名称 |
Process for producing zirconium sols and gels, and process for producing zirconia using the same |
摘要 |
A process for producing acidic boratozirconium chloride sols which comprises: reacting a zirconium compound with a boron compound in molar ratios of B/Zr of 0.3-1.2 together with a compound of a metal M, the metal M being selected from the group consisting of divalent, trivalent, tetravalent and pentavalent metals in molar ratios of M/Zr of about 0.01-1 in water in the presence of chloride ions in molar ratios of Cl/Zr of not less than about 1. The acidic boratozirconium chloride sol may be converted to basic boratozirconium sols by reacting the acidic sol with a basic carbonate compound such as ammonium carbonate. The sols, either acidic or basic, are readily gelled by contact with a dehydration solvent such as methanol or actone. The gel is calcined at relatively low temperatures to provide zirconia which is either very pure or stabilized in varied degrees.
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申请公布号 |
US4863706(A) |
申请公布日期 |
1989.09.05 |
申请号 |
US19870118940 |
申请日期 |
1987.11.10 |
申请人 |
TAKEDA CHEMICAL INDUSTRIES, LTD. |
发明人 |
WADA, TAKEO;ONAKA, HIROSHI;MATSUDA, HIDEAKI |
分类号 |
C01B35/06;C01B35/10;C01B35/12;C01B35/14;C01G25/00;C01G25/02;C04B35/486;C04B35/624 |
主分类号 |
C01B35/06 |
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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