负载型Ni B非晶态合金催化剂的表征及催化性能  

CHARACTERIZATION AND CATALYTIC PERFORMANCE OF SUPPORTED AMORPHOUS Ni B ALLOY CATALYSTS

作　　者：马爱增[1] 

机构地区：[1]中国石油化工集团公司石油化工科学研究院,北京100083

出　　处：《催化学报》1999年第6期603-607,共5页

基　　金：国家自然科学基金

摘　　要：采用ＩＣＰ，ＸＲＤ，ＤＳＣ，ＢＥＴ，ＳＥＭ 和ＴＥＭ 等技术对负载型ＮｉＢ非晶态合金催化剂进行了表征，研究了这类催化剂对乙烯中微量乙炔的选择加氢性能． 结果表明，在负载型非晶态合金催化剂中， ＮｉＢ以超细微粒的形式分散在载体上，但在不同载体上的分散度不同． 通过载体的引入，提高了非晶态合金的热稳定性，阻止了超细ＮｉＢ的聚集． 负载型非晶态合金催化剂对乙烯中微量乙炔的选择加氢表现出优良的催化性能．Supported amorphous Ni B alloy catalysts have been characterized by ICP, XRD, DSC, BET, SEM and TEM. Their catalytic performance in selective hydrogenation of acetylene in a large excess of ethene was evaluated. The results show that the amorphous Ni B alloy is dispersed as ultrafine particles in the supports and the dispersion depends on the nature of the support. Owing to the introduction of the support, the thermostability of the amorphous Ni B alloy has been increased and the gathering or sintering of the ultrafine Ni B particles was inhibited. In the selective hydrogenation of acetylene in a large excess of ethene, supported amorphous Ni B catalysts showed superior catalytic performance and the activity was related to the dispersion of amorphous Ni B alloy.

关 键 词：乙炔 选择加氢 乙烯 镍硼合金 非晶态合金 

分 类 号：P623.121[天文地球—地质矿产勘探] O643.36[天文地球—地质学]