石油化工2018，Vol.47Issue(3)：226-231,6.DOI:10.3969/j.issn.1000-8144.2018.03.003
氧化铝对银催化剂及其载体性能的影响
Effect of alumina on the properties of silver catalyst and its carrier
王辉 1魏会娟 1廉括 1李金兵 1代武军 1汤之强1
作者信息
- 1. 中国石化 北京北化院燕山分院,北京 102500
- 折叠
摘要
Abstract
α-Alumina carriers of silver catalyst were prepared by adding alumina powder. The effect of alumina powder on silver catalyst and α-alumina carrier was studied. The prepared alumina powder,α-alumina carriers and silver catalysts were characterized by XRD,mercury penetration method and XPS. The catalytic performances of the silver catalysts in ethylene epoxidation were evaluated in a micro fixed bed reactor. The results indicated that the addition of alumina powder improved the pore structure and morphology of carrier. The pore size distribution of the carrier moved to the larger aperture and the average pore diameter and the median pore diameter increased. The alumina layer became smaller and thicker,and gradually changed to the bulk shape. The dispersion of silver particles on the surface of the carrier was improved. The forces between silver particles and carrier was enhanced,and further the catalytic performance of the silver catalyst was improved, including activity,stability and life.关键词
氧化铝/银催化剂/载体/乙烯环氧化Key words
alumina/silver catalyst/carrier/ethylene epoxidation分类
化学化工引用本文复制引用
王辉,魏会娟,廉括,李金兵,代武军,汤之强..氧化铝对银催化剂及其载体性能的影响[J].石油化工,2018,47(3):226-231,6.
