文献类型：期刊文献

中文题名：Pt/SO_4^(2-)/ZrO_2-Al_2O_3催化正己烷异构化反应中的失活研究

英文题名：Deactivation of Pt / Pt/SO_4^(2-)/ZrO_2-Al_2O_3 catalyst for n-hexane isomerization

作者：王昭晖[1];徐俊[1];章红艳[1];宋月芹[1];周晓龙[1]

机构：[1]华东理工大学化工学院石油加工研究所,上海200237

年份：2016

卷号：36

期号：10

起止页码：92

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：国家自然科学基金项目(21103049);江苏省大气环境监测与污染控制高技术研究重点实验室开放基金(KHK1106)

语种：中文

中文关键词：Pt/SO_4^(2-)/ZrO_2-Al_2O_3;异构化;失活;正己烷

外文关键词：Pt/SO_4^（2-）/ZrO_2-Al_2O_3; isomerization; deactivation; n-hexane

摘要：制备了Pt/SO_4^(2-)/ZrO_2-Al_2O_3(Pt SZA)催化剂,考察了Pt SZA在正己烷异构化反应中的失活与再生问题,并通过XRD、Raman、TG、IR和TPO-MS等手段对失活前后催化剂的晶相、硫质量分数和积碳量进行表征。结果表明:在165℃反应550 min后,Pt SZA催化剂几乎完全失活。失活前后催化剂的晶相结构和硫质量分数没有明显变化,失活催化剂上仅有微量积碳生成,高温氢气和空气再生处理消除了失活催化剂上少量的积碳,催化活性得到完全恢复,催化剂上微量积碳的产生是催化剂失活的主要原因。
Pt/SO_4^（2-）/ZrO_2-Al_2O_3（ Pt SZA） catalyst is prepared. The deactivation and regeneration of Pt SZA catalyst in n-hexane isomerization reaction are studied. The Pt SZA catalyst is characterized by XRD,Raman,TG,IR and TPO-MS technologies to determine the phase,sulfur content and coke content of Pt SZA before and after reaction. The experimental results demonstrate that the Pt SZA catalyst is deactivated in short time,i. e. 550 minutes at 165℃. Compared with the fresh catalyst,the crystalline structure and sulfur content of the deactivated catalyst are almost not changed. The very trace of coke is formed over the deactivated catalyst. The coke deposit on deactivated catalyst can be eliminated by treatment in hydrogen or air at high temperature. The activity of the catalyst can be completely recovered. The main deactivation reason of Pt SZA should be related with the slight coke formed over the catalyst during isomerization reaction.