添加剂对Ru-Zn催化剂的结构及加氢性能的影响  

Effect of additives on the structure and hydrogenation performances of Ru-Zn catalysts

作　　者：潘再富[1] 王红琴[1] 张峰 戴云生[1,2] 王剑辉 叶涛 安霓虹 PAN Zai-fu;WANG Hong-qin;ZHANG Feng;DAI Yun-sheng;WANG Jian-hui;YE Tao;AN Ni-hong(Kunming Institute of Precious Metals,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.Ltd.,Kunming,650106,China;Sino-Platinum Industrial Catalyst(Yunnan)Co.Ltd.,Kunming 650106,China)

机构地区：[1]昆明贵金属研究所,贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106 [2]贵研工业催化剂(云南)有限公司,昆明650106

出　　处：《贵金属》2021年第3期26-30,共5页Precious Metals

基　　金：国家自然科学基金(21763014)。

摘　　要：采用沉淀法制备Ru-Zn催化剂,用扫描电镜(SEM)、透射电镜(TEM)和X射线衍射(XRD)等手段对其进行表征,研究了分别以聚乙二醇和聚乙烯吡咯烷酮作为添加剂,对Ru-Zn系催化剂催化苯加氢制环己烯性能的影响。结果表明,Ru-Zn催化剂的催化性能与催化剂制备过程中使用的添加剂存在密切关系;采用聚乙二醇制备的Ru-Zn催化剂,苯转化率42%时环己烯选择性达82.3%。该催化剂在循环使用5次后,环己烯收率仍保持在32%以上。Ru-Zn catalysts were prepared by a precipitation method, and their structure and physicochemical properties were characterized by SEM, XRD and TEM. The influence of additives(i.e.,polyethylene glycol, polyvinylpyrrolidone) on hydrogenation performance was investigated. The results showed that the catalytic performance of Ru-Zn catalyst correlated to the additives used in the preparation process. It was found that the benzene conversion and cyclohexene selectivity were 42% and 82.3%,respectively for the Ru-Zn catalyst prepared with polyethylene glycol. After 5 cycles, the Ru-Zn catalyst still has above 32% of cyclohexene yield.

关 键 词：苯 选择加氢 Ru-Zn催化剂 添加剂 

分 类 号：O643.361[理学—物理化学]