发明名称 |
Thermally stable alumina particulates |
摘要 |
Thermally stable transitional alumina particulates retaining high specific surface area after calcination at 1000° C. suitable for the use as catalysts or catalysts supports are produced by treating an aqueous solution containing Al3+ and optionally a doping amount of La3+ (e.g., 0.3 mol. %) with an anion-exchange resin to give a stable hydroxide sol followed by freeze drying of the sol and further thermal dehydration. The resultant stabilized transitional alumina retains high specific surface area at 1000° C., and additionally stabilization is achieved at very low levels of added La.
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申请公布号 |
US2002192150(A1) |
申请公布日期 |
2002.12.19 |
申请号 |
US20010825473 |
申请日期 |
2001.04.03 |
申请人 |
GLAZOV MICHAEL V.;NOVAK JOHN W.;VERTEGEL ALEXEY |
发明人 |
GLAZOV MICHAEL V.;NOVAK JOHN W.;VERTEGEL ALEXEY |
分类号 |
B01D53/94;B01J21/04;B01J23/10;B01J37/32;C01F7/02;C01F7/34;(IPC1-7):B01J21/04 |
主分类号 |
B01D53/94 |
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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