公开(公告)号：US5145824A

公开(公告)日：1992-09-08

申请号：US804494

申请日：1991-12-09

申请人： John E. Buffum ,  Ruth M. Kowaleski ,  William H. Gerdes

发明人： John E. Buffum ,  Ruth M. Kowaleski ,  William H. Gerdes

IPC分类号： B01J23/50 ,  B01J21/06 ,  B01J21/12 ,  B01J23/00 ,  B01J23/66 ,  B01J23/68 ,  B01J27/055 ,  B01J27/25 ,  C07B61/00 ,  C07D301/10 ,  C07D303/04

CPC分类号： C07D301/10 ,  B01J23/688 ,  B01J21/066 ,  Y02P20/52

摘要： The invention relates to ethylene oxide catalysts containing silver, alkali metal promoters, rhenium promoters and optionally rhenium co-promoters selected from sulfur, molybdenum, tungsten, chromium and mixtures thereof supported on a carrier consisting of at least 85 percent by weight of alpha alumina, from about 0.01 to about 6 percent by weight (measured as the oxide) of an added alkaline earth metal in the form of an oxide, from about 0.01 to about 5 percent by weight (measured as the dioxide) of added silicon in the form of an oxide and from zero to about 10 percent by weight (measured as the dioxide) of added zirconium in the form of an oxide. The invention also relates to an ethylene oxide process using the above catalyst.

摘要翻译： 本发明涉及含有银的环氧乙烷催化剂，碱金属助催化剂，铼促进剂和任选的选自硫，钼，钨，铬及其混合物的铼助催化剂，其负载在由至少85重量％的α-氧化铝， 以氧化物形式的添加的碱土金属的约0.01至约6重量％（以氧化物计），加入的硅的约0.01至约5重量％（以二氧化物计），其形式为 氧化物和以氧化物形式的添加的锆的0至约10重量％（作为二氧化物测量）。 本发明还涉及使用上述催化剂的环氧乙烷方法。