胶溶剂醋酸对Hβ分子筛催化剂性能的影响研究.pdf

D059 胶溶剂醋酸对 Hβ分子筛催化剂性能的影响 1 1 1 1 2 张庆华 ，李建伟 ，李英霞 ，陈标华 ，曹钢 （1 北京化工大学可控化学反应科学与技术基础教育部重点实验室，北京，100029； 2 燕山石油化工公司，北京102500) 摘要 实验考察了胶溶剂醋酸对Hβ分子筛催化剂成型强度的影响，并以丙烯和苯合成异丙苯为 模型反应，分别采用气-液半连续和液-液连续操作两种方式，对所制备催化剂颗粒的宏观反应特 性进行了实验评价。结果表明：（1）催化剂颗粒强度随成型过程中醋酸加入量的增加呈现先增大 后减小的趋势，最高颗粒强度对应的醋酸浓度为 6%；（2 ）所制备催化剂的活性随醋酸用量的增 加而增加；（3 ）醋酸用量对异丙苯的选择性影响不大；但（4 ）分子筛催化剂的寿命却随醋酸用 量的增加而降低。 关键词 Hβ分子筛催化剂，醋酸，异丙苯 中图分类号 O643 文章标识码 A EFFECT OF PEPTIZATION ACETIC ACID ON PERFORMANCE OF Hβ ZEOLITE CATALYST 1 1 1 1 2 ZHANG Qinghua , LI Jianwei , LI Yingxia , CHEN Biaohua and CAO Gang ( 1 The Key L aboratory of Cont rollable Chemical Reactions of Minist ry of Education , Beijing University of ChemicalTechnology , Beijing 100029 , China ; 2 Beijing Yanshan Pet rochemical Corporation , Beijing 102500 , China) Abstract The effect of peptization acetic acid on Hβ zeolite catalyst strength was experimentally investigated. And taking the alkylation of propylene with benzene to form cumene as model reaction, the global reaction performance of Hβ zeolite catalyst prepared in this work was also evaluated by means of the gas-liquid semi-continuous reactor and liquid-liquid continuous reactor. The results shows: (1) The zeolite catalyst strength is first increase and then decrease with the increase of acetic acid dosage, the maximal catalyst strength is obtained at acetic acid of 6%, (2) Activity of Hβ zeolite catalyst increases with the increase of acetic acid dosage, (3) Acetic acid dosage has a little influence on the selectivity of Hβ zeo