溶剂化金属原子浸渍法制备聚合物固载Co-Ag催化剂Ⅱ.催化性质研究  

Preparation of Polymer Immobilized Co-Ag Catalyst via Solvated Metal Atom Impregnation Ⅱ. Stadies on the Catalyst Properties

作　　者：吴世华[1] 魏伟[1] 杨秀檩[1] 黄唯平[1] 解勤兴[1] 

机构地区：[1]南开大学化学系,天津300071

出　　处：《功能高分子学报》2000年第1期47-48,共2页Journal of Functional Polymers

基　　金：国家自然科学基金!资助项目 (批准号 2 96 710 2 1);天津市自然科学基金!资助项目 (批准号 9836 0 36 11)

摘　　要：用溶剂化金属原子浸渍技术制备了高分散树脂固载Co -Ag双金属催化剂。研究了这些催化剂在二丙酮醇加氢和用作燃料电池电极时的催化性质。与普通浸渍法制备的相同组成的催化剂相比 ,溶剂化金属原子浸渍催化剂显示出更高的活性。这是因为溶剂化金属原子浸渍催化剂具有更高的分散性和金属的还原度 (零价金属百分比 )。研究结果还表明随着金属含量的增加催化活性增大 ,在电催化反应中钴的加入增大了银的催化活性。The solvated metal atom impregnation(SMAI) technique was used to prepare highly dispersed Co-Ag/D-72 bimetallic catalyst immobilized on D-72 resin. The catalytic properties of these catalysts in hydrogenation of diacetone alcohol and their electric catalytic properties as a fuel cell electrode were studied. Compared with the conventional impregnation (CI) Co-Ag/D-72 catalysts ,the SMAI catalyst showed much greater activity for these reaction. The high activity of SMAI catalyst is attributed to the high dispersity and reductivity of metal (high percentage of metal in zero-valent state). The result of the studies also indicated that as the metal content increased, the catalytic activity of Ag increased with the incorporation of cobalt.

关 键 词：钴 银 SMAI技术 双金属催化剂 电催化性质 

分 类 号：TQ426.82[化学工程] O643.36[理学—物理化学]