发明名称 |
VERFAHREN ZUR VERBESSERUNG DER SELEKTIVITÄT EINES KATALYSATORS UND VERFAHREN ZUM EPOXIDIEREN EINES OLEFINS |
摘要 |
A method for improving the selectivity of a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, which method comprises contacting the catalyst, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C.; and a process for the epoxidation of an olefin, which process comprises contacting a supported highly selective epoxidation catalyst comprising silver in a quantity of at most 0.17 g per m2 surface area of the support, or a precursor of the catalyst comprising the silver in cationic form, with a feed comprising oxygen at a catalyst temperature above 250° C. for a duration of up to 150 hours, and subsequently decreasing the catalyst temperature to a value of at most 250° C. and contacting the catalyst with the feed comprising the olefin and oxygen. |
申请公布号 |
DE60332457(D1) |
申请公布日期 |
2010.06.17 |
申请号 |
DE2003632457 |
申请日期 |
2003.06.24 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
LOCKEMEYER, JOHN ROBERT;REINALDA, DONALD;YEATES, RANDALL CLAYTON |
分类号 |
B01J37/08;B01J23/50;B01J23/68;B01J37/02;B01J37/14;C07D301/03;C07D301/10 |
主分类号 |
B01J37/08 |
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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