发明名称 |
Calcination in an inert gas in the presence of a small concentration of an oxidizing component |
摘要 |
This invention relates to an improved process for preparing silver catalysts useful for the vapor phase production of ethylene oxide from ethylene and oxygen. An inert support is impregnated with a solution of a catalytically effective amount of a silver containing compound, a promoting amount of an alkali metal containing compound, and a promoting amount of a transition metal containing compound. The impregnated support is calcined by heating at a temperature of from about 200° C. to about 600° C. to convert the silver in the silver containing compound to metallic silver and to decompose and remove substantially all organic materials. The heating is conducted under an atmosphere comprising a combination of an inert gas and from about 10 ppm to about 5% by volume of a gas of an oxygen containing oxidizing component.
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申请公布号 |
US7759284(B2) |
申请公布日期 |
2010.07.20 |
申请号 |
US20050124646 |
申请日期 |
2005.05.09 |
申请人 |
SCIENTIFIC DESIGN COMPANY, INC. |
发明人 |
PAK SERGUEI;ROKICKI ANDRZEJ |
分类号 |
B01J23/00;B01J20/00;B01J21/00 |
主分类号 |
B01J23/00 |
代理机构 |
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主权项 |
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地址 |
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