Author:
Liu Xiaohua,Huang Wenqing,Man Yi,Wang Dingbo,Jiang Jianzhun
Abstract
Abstract
In this paper, the structural and acidic changes of ZSM-5 zeolite modified by K and Ca were studied. Meanwhile we use in-situ FTIR to study the reaction of isobutylene on ZSM-5 zeolite before and after modification, investigating reaction mechanism and optimal reaction time. The results shows that the amount of weak acid increases in the modified zeolite. The Ca-ZSM-5 can not only effectively control the hydrogen transfer reaction to inhibit the formation of aromatic hydrocarbons, but also promote the occurrence of dehydrogenation cracking reaction; while the K-ZSM-5 is not effective in the cracking reaction.