石油化工2019，Vol.48Issue(9)：887-891,5.DOI:10.3969/j.issn.1000-8144.2019.09.002
焙烧气氛对PtSnK/Al2O3催化剂丙烷脱氢性能的影响
Effect of calcination atmosphere on performance of PtSnK/Al2O3 catalyst in propane dehydrogenation
蔡奇 1杨玉旺 1李晓云 1孙彦民 1于海斌1
作者信息
- 1. 中海油?天津化工研究设计院有限公司?天津市炼化催化技术工程中心,天津?300131
- 折叠
摘要
Abstract
H2PtCl6·6H2O and SnCl2·2H2O were immersed on the spherical alumina carriers,and the obtained carriers were calcined under different atmospheres to obtain catalysts. The catalysts were characterized by XRF,XRD,NH3-TPD,H2-TPR,CO-TPR to analyze the effect of calcination atmospheres on the performance of the catalysts. The results showed that the atmospheres of calcination do not affect the pore structure and crystal structure of the catalysts. The catalyst calcined in chlorine-containing air atmosphere maintained the Cl content,the number of acid centers of the carrier and the acid amount were increased,so that the Pt was better interacted with SnOx and better dispersed. The propane dehydrogenation performances of the catalysts calcined in different atmospheres were investigated. The results showed that the propane conversion rate of the catalyst calcined in chlorine-containing air was significantly higher than that of the catalysts calcined in air or nitrogen. From the initial of the reaction to 50 h after,the conversion of propane decreased from 37% to about 35% and the selectivity to propylene was about 96%.关键词
焙烧气氛/H2PtCl6·6H2O/SnCl2·2H2O/丙烷脱氢Key words
calcination atmosphere/H2PtCl6·6H2O/SnCl2·2H2O/propane dehydrogenation分类
化学化工引用本文复制引用
蔡奇,杨玉旺,李晓云,孙彦民,于海斌..焙烧气氛对PtSnK/Al2O3催化剂丙烷脱氢性能的影响[J].石油化工,2019,48(9):887-891,5.
