Ce/ZSM-5气相催化氧化甲苯制备苯甲醛  

Catalytic Oxidation of Toluene to Benzaldehyde by Ce/ZSM-5 through Gas Phase

作　　者：江玲 李煜杭 王鑫洋 刘衍 JIANG Ling;LI Yu-hang;WANG Xin-yang;LIU Yan(Baling Petrochemical,Caprolactam Division,Yueyang 414000,China;School of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology,Yueyang 414000,China;Daqing Petrochemical Co.,Ltd.,Plastic Plant,Daqing 163700,China)

机构地区：[1]巴陵石化己内酰胺部,湖南岳阳414000 [2]湖南理工学院化学化工学院,湖南岳阳414000 [3]中国石油大庆石化有限公司塑料厂,黑龙江大庆163700

出　　处：《精细化工中间体》2021年第3期52-58,共7页Fine Chemical Intermediates

摘　　要：采用浸渍法、离子交换法以及均匀沉淀法制备出金属活性组分改性的M/ZSM-5分子筛为催化剂,气相催化氧化甲苯制备苯甲醛;同时采用XRD、FT-IR及N2-物理吸附等对其进行表征。结果表明:在反应温度为350℃,空速为2500 h^(-1),n(空气)∶n(甲苯)=5∶1,催化剂为10%Ce/ZSM-5的反应条件下,苯甲醛的收率、转化率、选择性分别达到了5.0%、10.7%、46.8%。In this study,m/zsm-5 molecular sieve modified by metal active components was prepared by impregnation,ion exchange and uniform precipitation method,and toluene was oxidized to benzaldehyde by gas phase catalysis;Meanwhile,XRD,FT-IR,N2 physical adsorption were used to characterize the adsorption.The results show that the yield,conversion and selectivity of benzaldehyde reach 5.0%,10.7%,46.8%respectively under the conditions of 350℃,air velocity 2500 h-1,n(air)∶n(toluene)=5∶1,catalyst 10%Ce/ZSM-5 respectively.

关 键 词：气相氧化 苯甲醛 ZSM-5分子筛 甲苯 

分 类 号：TQ21[化学工程—有机化工]