Co－B非晶态合金超细微粒催化剂的研究

Ｃｏ－Ｂ非晶态合金超细微粒催化剂的研究姚凯文，范以宁，陈懿，李新生（南京大学化学系，南京２１００９３；中国科学院大连化学物理研究所催化基础国家重点实验室，大连１１６０２３）关键词非晶态，超细微粒，钴基合金，硼合金，一氧化碳，加氢非晶态合金超细微粒兼有...

STUDIES ON THE ULTRAFINE AMORPHOUS Co-BALLOY PARTICLE CATALYSTS

Ultrafine amorphous Co-B alloy particle catalysts have been prepared by three methods:(a) addition of KBH4 solution to CoCl2 solution, (b) addition of CoCl2, solution to KBH4 solution,and (c) flow ofboth solutions in a Y junction. It is shown that among the above threecatalysts the Co-B(c) catalyst has the highest specific catalytic activityfor CO hydrogenation, because of homogeneous distribution of alloyingcomponents in the amorphous matrix. Besides, amorphous Co-B alloyparticle catalyst exhibits higher catalytic activity and higher C2-C4 selectivities than the corresponding crystallized Co-B alloy catalyst.