燃料化学学报2012，Vol.40Issue(4)：501-506,6.
含磷铝单元的AlMCM-41负载的磷化钨催化剂DBT HDS性能
Hydrodesulfurization of dibenzothiophene over tungsten phosphide loaded on AlMCM-41 containing aluminophosphate building units
李翠清 1邓明亮 1王虹 1葛明兰 1郭志武 1孙桂大1
作者信息
- 1. 北京石油化工学院绿色化学与催化材料研究所,北京 102617
- 折叠
摘要
Abstract
As a support, AIMCM-41 containing aluminophosphate building units with different Si/AI molar ratio( Si/Al= 30, 40,
50, 55, 60, respectively) was synthesized by microwave heating method. The supported tungsten phosphide( WP) catalysts withdifferent Si/AI molar ratio were prepared by impregnation and H2 -IPR ( temperature programed reduction in hydrogen flow) method.The samples were characterized by X-ray diffraction ( XRD) , BET specific surface area, scanning electron microscopy ( SEM) andX-ray photoelectron spectroscopy ( XPS) methods. The dibenzothiophene ( DBT) hydrodesulfurization ( HDS) activities of thecatalysts were evaluated by a fixed-bed micro-reactor. Active species of WP and the structure of -AI-O-W-P, the matter with someactivity, were detected on the catalysts surface. WP was the dominative active phase. The peKentage of active phase WP on thecatalyst surface was influenced by the Si/AI molar ratio. Catalysts with different Si/AI molar ratio exhibited different selectivehydrogenation performances, and direct hydrodesulfurization( DDS) was the main DTB HDS route. Catalyst with Si/AI molar ratioof 55 was found to give a higher DDS products ( PB) selectivity of 82. 7% and a higher DBT HDS conversion of 93. 1% , whichwas favor to reducing the hydrogen consumption and protecting the environment.关键词
磷化钨/AlMCM-41/磷铝单元/复合分子筛/二苯并噻吩/加氢脱硫Key words
tungsten phosphide/AIMCM41/aluminophosphate building units/composite zeolite/dibenzothiophene/hydrodesulfurization分类
化学化工引用本文复制引用
李翠清,邓明亮,王虹,葛明兰,郭志武,孙桂大..含磷铝单元的AlMCM-41负载的磷化钨催化剂DBT HDS性能[J].燃料化学学报,2012,40(4):501-506,6.
