石油化工2018，Vol.47Issue(6)：543-550,8.DOI:10.3969/j.issn.1000-8144.2018.06.004
氧化铝表面元素修饰对硫化态催化剂中MoS2形态的影响及机理
Effects of alumina surface modification with elements on the morphology of MoS2 in sulfided catalyst and mechanisms thereof
郭长友 1沈智奇 1王少军 1凌凤香 1张会成1
作者信息
- 1. 中国石化 大连石油化工研究院,辽宁 大连 116045
- 折叠
摘要
Abstract
Effect laws of support surface modification with elements on the morphology of MoS2 and effects of modifying elements on metal-support interaction were investigated by means such as TPR technique and TEM,and the effect mechanisms of the modifying elements on the MoS2active component were analyzed. The experimental results showed that modification with elements allowed for decrease in length of MoS2lamellae and increase in dispersity of MoS2. Moreover,the modifying elements had little effect on the appearance temperature and intensity of low-temperature reduction peaks. B and P,which are non-metal elements,exhibited strong interaction with Mo,thus inhibiting the migration of Mo atoms in the sulfidation process and decreasing the intensity of high-temperature reduction peaks. In addition,Sn and Zr,which are metal elements with large atomic radiuses,played a role of barrier in the migration path of Mo on alumina surface,but had little effect on the appearance temperature and intensity of high-temperature reduction peaks.关键词
程序升温还原/元素修饰/氧化铝表面Key words
temperature-programmed reduction/modification with elements/alumina surface分类
能源科技引用本文复制引用
郭长友,沈智奇,王少军,凌凤香,张会成..氧化铝表面元素修饰对硫化态催化剂中MoS2形态的影响及机理[J].石油化工,2018,47(6):543-550,8.
