一种负载碳化钼催化剂的制备方法及性能研究  

PREPARATION OF SUPPORT MOLYBDENUM CARBIDE CATALYST AND ITS CATALYTIC PERFORMANCE

作　　者：李延超[1] 李来平[1] 张新[1] 王晖[1] 蒋丽娟[1] 刘燕[1] LI Yan-chao LI Lai-ping ZHANG Xin WANG Hui JANG Li- juan LIU Yan(Nor thwest Inst itute For Non-Ferrous Metal Research, Xi＇an 710016,Shaanxi,China)

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《中国钼业》2017年第3期44-46,共3页China Molybdenum Industry

摘　　要：采用MoO_3为前躯体,以CH_4/H_2为碳化气,通过程序升温碳化反应装置制备出Mo_2C催化剂,所得催化剂产品用XRD、XPS、SEM进行表征。采用高压微反-色谱实验装置考察了制备的碳化钼催化剂的加氢脱硫反应性能,结果表明:程序升温条件下的局部规整反应可提高催化剂的活性,MoO_3在CH_4/H_2气氛中的还原碳化历程应为MoO_3→MoO_2→MoOxCy→Mo_2C,实验确定的适宜还原碳化温度为600℃。Molybdenum carbide catalysts were prepared by temperature-programmed reaction using CH4/H2 gas mix-ture to carburize molybdenum trioxide at different temperatures, then were characterized with XRD,XPS and SEM. The catalytic performance of molybdenum carbide catalysts was evaluated for hydro-desulfurization. The results indicated that molybdenum carbide catalysts possessed much higher thiophene HDS activity, and the carburizing re-action path way of MoO3 in CH4/H2 was MoO3→MoO2→MoOxCy→Mo2C , and the proper carburizing temperature was 600 ℃ as determined by experiment .

关 键 词：氧化钼 碳化钼 催化剂 

分 类 号：O643.36[理学—物理化学]