发明名称 |
Method for the synthesis of mixed metal oxide powders |
摘要 |
A technique to synthesize complex oxide ceramic powders which offers advantages of both the coprecipitation and sol-gel routes while doing away with the disadvantages is disclosed. Namely, the ability to achieve chemical homogeneity and crystallite size on the namometer length scale at a nonprohibitive cost is provided by the disclosed method. In one embodiment of the invention, a method for the synthesis of a mixed metal oxide powder is provided including (a) combining a liquid absorbent resin with at least one solution selected from the group consisting of solutions containing at least one organo-metallic compound and solutions containing at least one metallic salt compound, such that at least two metals are present in the liquid absorbent resin after the combining is completed; (b) after the combining, allowing the liquid absorbent resin to swell and gel and thereby form a swollen gel; (c) preparing a precursor material by changing at least one of the pH and temperature of the swollen gel; (d) pyrolyzing the precursor material to form a pyrolyzed precursor material; and (e) calcining the pyrolyzed precursor material to form a mixed metal oxide powder.
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申请公布号 |
US5788950(A) |
申请公布日期 |
1998.08.04 |
申请号 |
US19940282509 |
申请日期 |
1994.08.03 |
申请人 |
SHOWA DENKO K.K. |
发明人 |
IMAMURA, KUNIO;DIGREGORIO, JOHN F.;SMITH, DOUGLAS M.;IZAWA, HIROZUMI;YAMAGUCHI, TETSUHIKO |
分类号 |
C01B13/32;C01B13/18;C01F7/16;C01F17/00;C01G3/00;C01G23/00;C01G25/00;C01G25/02;(IPC1-7):C01F1/00;G01G25/00;G01G1/00 |
主分类号 |
C01B13/32 |
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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