公开(公告)号：US06849243B1

公开(公告)日：2005-02-01

申请号：US09937524

申请日：2000-03-21

申请人： Alfred Hagemeyer ,  Harald Werner ,  Uwe Dingerdissen ,  Klaus Kühlein ,  Günter Dambeck ,  Gerhardt Geiss ,  Andrea Rutsch ,  Stephan Weidlich

发明人： Alfred Hagemeyer ,  Harald Werner ,  Uwe Dingerdissen ,  Klaus Kühlein ,  Günter Dambeck ,  Gerhardt Geiss ,  Andrea Rutsch ,  Stephan Weidlich

IPC分类号： B01J23/52 ,  B01J23/58 ,  B01J23/66 ,  B01J37/02 ,  B01J37/18 ,  C07B61/00 ,  C07C67/05 ,  C07C67/055 ,  C07C69/15 ,  C01B21/068 ,  C01B33/06

CPC分类号： B01J23/66 ,  B01J23/52 ,  B01J23/58 ,  C07C67/055 ,  C07C69/01 ,  C07C69/15

摘要： The invention relates to a supported catalyst and the production and use thereof in the synthesis of vinyl acetate in the gaseous phase from ethylene, acetic acid and oxygen, or from gases containing oxygen, whereby the activity and selectivity are simultaneously improved. The catalyst contains palladium, at least one alkali metal compound and optionally one or more catalyst accelerators, in particular, gold, barium and/or cadmium on a porous support. Said support contains at least one reducible metal oxide, in particular oxides of the elements of groups IIIb, IVb, Vb, VIb from the periodic table of elements. Once the support has been loaded with at least one palladium compound, a reduction is carried out at a temperature of >200° C.

摘要翻译： 本发明涉及负载催化剂及其在乙烯，乙酸和氧气或含氧气体合成乙酸乙烯酯的生产和应用，从而同时改善活性和选择性。 催化剂包含钯，至少一种碱金属化合物和任选的一种或多种催化剂促进剂，特别是多孔载体上的金，钡和/或镉。 所述载体包含至少一种可还原金属氧化物，特别是元素周期表中IIIb，IVb，Vb，VIb族元素的氧化物。 一旦载体上载有至少一种钯化合物，在> 200℃的温度下进行还原