Y-Beta复合分子筛的甲苯甲醇烷基化性能研究  

Catalytic Activity of Composite Zeolites Y-Beta for Alkylation of Toluene With Methanol

作　　者：高杭 秦波 杜艳泽 柳伟 王晓司 GAO Hang, QIN Bo, DU Yan-ze, LIU Wei, WANG Xiao-si(Dalian Research Institute of Petroleum and Petrochemicals, Liaoning Dalian 116045, Chin)

机构地区：[1]中国石油化工股份有限公司大连石油化工研究院,辽宁大连116045

出　　处：《当代化工》2018年第3期494-497,共4页Contemporary Chemical Industry

摘　　要：采用XRD、N_2吸附-脱附、NH_3-TPD和Py-FTIR等技术对Y-Beta复合分子筛和Y分子筛进行了表征,对比了两者的孔特征以及考察了在Y分子筛上复合Beta分子筛对甲苯甲醇烷基化性能的影响。结果表明,HY-Beta-C催化剂的比表面积、孔体积均有所增大,中强酸量有所提高,明显提高了该催化剂在甲苯甲醇烷基化反应中的甲苯转化率以及二甲苯收率,在400℃时,HY-Beta-C的甲苯转化率和二甲苯收率均是HY-C的1.5倍。Y-Beta composite molecular sieve and Y molecular sieve were characterized by XRD, BET,NH_3-TPD and Py–FTIR, their pore characteristics were compared, and the influence of compounding Beta molecular sieve on Y zeolites on alkylation of toluene with methanol was investigated. The results showed that the surface area and pore volume of HY-Beta-C catalyst were both increased, the amount of medium strong acid were improved, which obviously improved the toluene conversion and xylene yield for alkylation of toluene with methanol. At 400 ℃, the toluene conversion and xylene yield of HY-Beta-C were 1.5 times as high as those of HY-C.

关 键 词：Y-Beta复合分子筛 甲苯甲醇烷基化 二甲苯 

分 类 号：TQ032.4[化学工程]