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1. 发明授权

US5371274A Methods for producing ethylidene diacetate using catalysts supported on an organic carrier 失效
标题翻译：使用负载在有机载体上的催化剂生产亚乙基二乙酸酯的方法
公开(公告)号：US5371274A
公开(公告)日：1994-12-06
申请号：US94485
申请日：1993-07-19
申请人： Dae C. Park , Sung Y. Cho , Woo S. Chang
发明人： Dae C. Park , Sung Y. Cho , Woo S. Chang
IPC分类号： B01J31/04 , B01J31/06 , B01J31/24 , C07C55/00 , C07C67/29 , C07C67/36 , C07C69/16
CPC分类号： C07C67/29
摘要： The present invention relates to the field of catalyst technology, and more particularly to the preparation of a supported catalyst and a method of producing ethylidene diacetate using that supported catalyst. The catalyst is represented by the formula M.sub.a X. Compound M includes a group VIII transition metal which catalyzes the formation of ethylidene diacetate, preferably a compound of rhodium or palladium. Carrier X is an organic carrier, preferably selected from the divinylbenzene-polystyrene copolymers, most preferably copolymers having about 1-20% crosslinking. The weight percent of metal M contained in the catalyst is represented by the latter a. The supported heterogenized catalyst results from covalent bonding of the transition metal compound to the organic polymer carrier. Ethylidene diacetate was produced by reacting methyl acetate, iodomethane, carbon monoxide and hydrogen in the presence of this supported catalyst and an accelerator at elevated temperature and pressure. According to the present invention, the reaction product, ethylidene diacetate, is easily separated from the catalyst. The produced ethylidene diacetate may be used as a starting material for preparing vinyl acetate monomer.
摘要翻译：本发明涉及催化剂技术领域，更具体地涉及负载型催化剂的制备和使用负载型催化剂生产亚乙基双乙酸酯的方法。催化剂由式MaX表示。化合物M包括催化亚乙基二乙酸酯，优选铑或钯化合物的VIII族过渡金属。载体X是优选选自二乙烯基苯 - 聚苯乙烯共聚物的有机载体，最优选具有约1-20％交联的共聚物。催化剂中所含金属M的重量百分数由后者a表示。负载的异质化催化剂是由过渡金属化合物与有机聚合物载体的共价键合而产生的。通过使乙酸甲酯，碘甲烷，一氧化碳和氢气在该负载型催化剂和促进剂的存在下，在升高的温度和压力下反应制备亚乙基二乙酸酯。根据本发明，反应产物亚乙基二乙酸酯容易与催化剂分离。所生产的亚乙基二乙酸酯可以用作制备乙酸乙烯酯单体的起始原料。

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