钨硅酸改性ZSM-22分子筛对苯酚与异丙醇烷基化的影响  

Alkylation of phenol with isopropanol over tungstosilicic acid modified zeolite ZSM-22

作　　者：肖瑞杰[1] 李扬 商永臣[1] 赵娜[1] 赵欣[1] 

机构地区：[1]哈尔滨师范大学化学系,黑龙江哈尔滨150025 [2]天津和平艺术中学,天津30052

出　　处：《化学工程师》2010年第12期5-7,共3页Chemical Engineer

基　　金：黑龙江省自然科学基金项目(B200914);哈尔滨市科技创新人才研究专项资金项目(2008RFQXG074);哈尔滨师范大学科技发展预研项目(08XYS-03)

摘　　要：本文采用X射线衍射、BET、NH3-TPD几种表征方法,研究了ZSM-22的表面酸性和结构,以及在ZSM-22分子筛催化剂上苯酚异丙醇的烷基化反应。实验结果表明:在T=260℃、WHSV=1.8h-1、CatalystLoading=0.3g、n异丙醇/n苯酸=0.8条件下,苯酚的转化率可达6.04%,邻异丙基苯酚和对异丙基苯酚的总选择性为86.14%。浸渍钨硅酸后的ZSM-22,钨硅酸含量为10%苯酚转化率可达到68.29%。Employing XRD and BET showed ZSM-22 structure with highly ordered crystalline structure;NH3-TPD was used as ZSM-22 surface acidity of test;Alkylation of phenol with isopropanol over zeolite ZSM-22 occurred.The result showed that under optimal reaction conditions of temperature of 260℃,WHSV of 1.8h-1,Catalyst Loading of 0.3g,nIPA/nPhenol of molar ratio of 0.8,phenol conversion rate can be achieved 70%,the total of selectivity o-isopropyl phenol and isopropyl phenol was 86.14%.After impregnation of tungstosilicic acid in zeolite ZSM-22,phenol conversion rate can reach to 68.29% under tungstosilicic acid content of 10%.

关 键 词：ZSM-22分子筛 钨硅酸 苯酚 异丙醇 烷基化 

分 类 号：TB383[一般工业技术—材料科学与工程]