发明名称 |
Catalisador adequado para a epoxidação em fase vapor de olefinas e processo para a preparação do veículo do catalisador |
摘要 |
This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported an a carrier having a crush strength of at least about 5 pounds and a settled packing density of at least about 30 pounds/cubic foot which comprises first and second alpha alumina components with a first alpha alumina component in the form of particles having a median crystallite size of from about 0.4 to about 4 microns providing from about 95% to about 40% of the total weight of alpha alumina in the carrier and a second alpha alumina component generated in situ by a sol-gel process and providing the balance of the alpha alumina in the carrier. Titania is optionally added to the carrier. |
申请公布号 |
BR9407417(A) |
申请公布日期 |
1996.11.12 |
申请号 |
BR19949407417 |
申请日期 |
1994.09.07 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V |
发明人 |
MAREK MATUSZ;CAROLUS MATTHIAS ANNA MARIA MESTERS;JOHN EDWARD BUFFUM |
分类号 |
B01J21/00;B01J21/04;B01J23/00;B01J23/58;B01J23/66;B01J23/68;B01J32/00;C07D301/10 |
主分类号 |
B01J21/00 |
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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