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    • 7. 发明授权
    • Silver catalyst for production of ethylene oxide from ethylene and
process for producing the catalyst
    • 用于从乙烯生产环氧乙烷的银催化剂和用于生产催化剂的方法
    • US4690913A
    • 1987-09-01
    • US767831
    • 1985-08-20
    • Naohiro NojiriYukio Sakai
    • Naohiro NojiriYukio Sakai
    • B01J23/50B01J23/66B01J23/68C07D301/10B01J23/02B01J23/04
    • C07D301/10B01J23/50B01J23/66B01J23/68B01J23/681Y02P20/52
    • A catalyst for the production of ethylene oxide from ethylene, said catalyst comprising a porous carrier composed of a molded article of a refractory material and at least silver grains deposited on the carrier, wherein(A) silver is distributed on the outside surface of the carrier and on the inner surfaces of the pores of the carrier,(B) silver grains distributed on the inner surfaces of the pores of the carrier have an average diameter of 0.05 to 0.4 micron, and(C) the loading (S) of silver on the outside surface layer of the catalyst and the loading (I) of silver on the innermost layer of the catalyst satisfy the following expressionI.gtoreq.0.65S; and a process for producing a catalyst for the production of ethylene oxide from ethylene, which comprises impregnating an aqueous solution containing a silver salt and an amine as a complex forming agent in a porous carrier composed of a molded article of a refractory material, and heating the carrier with superheated steam to deposit silver on the carrier.
    • 一种用于从乙烯生产环氧乙烷的催化剂,所述催化剂包括由耐火材料的模制品和沉积在载体上的至少银颗粒构成的多孔载体,其中(A)银分布在载体的外表面上 并且在载体的孔的内表面上,(B)分布在载体孔的内表面上的银颗粒的平均直径为0.05至0.4微米,(C)银的负载量(S) 催化剂的外表面层和催化剂最内层上的银负载量(I)满足下式I> = 0.65S; 以及由乙烯制造环氧乙烷的催化剂的制造方法,其特征在于,在由耐火材料成形体构成的多孔载体中浸渍含有银盐和胺作为络合物形成剂的水溶液,加热 具有过热蒸汽的载体在载体上沉积银。