燃料化学学报2017，Vol.45Issue(8)：980-985,6.
载体性质对Pd催化剂加氢脱硫性能的影响
Effect of support properties on the performance of supported Pd catalysts in hydrodesulfurization
摘要
Abstract
SiO2,siliceous MCM-41 (Si-MCM-41),physical mixture of Si-MCM-41 and ZSM-5 (Z-MCM-41-M),and Z-MCM-41 composite obtained by coating MCM-41 on ZSM-5 zeolite particles were prepared and characterized by XRD,HRTEM,N2 adsorption-desorption and NH3-TPD.The performances of the supported Pd catalysts in hydrodesulfurization (HDS) were evaluated in a fixed-bed reactor with dibenzothiophene (DBT) as the model sulfur-containing molecule;the effect of support properties on the performance of supported Pd catalysts in HDS was then investigated.The results indicated that the performance in HDS of supported Pd catalysts are significantly influenced by the support properties.Although the specific surface has a minor influence on the HDS activity of the supported Pd catalysts,the hydrogenation (HYD)selectivity is probably related to the pore structure of support;the mesoporous structure is beneficial to the improvement of HYD selectivity.The acid supports can give the Pd catalysts higher HDS activity,owing to the hydrogen spillover effect.The Z-MCM-41 composite is an excellent support for noble metal Pd catalyst in HDS,which can be ascribed to the synergy of the mesoporous structure of MCM-41 and acidic properties of ZSM-5.关键词
MCM-41/ZSM-5/复合分子筛/Pd/加氧脱硫Key words
MCM-41/ZSM-5/composite zeolite/Pd/hydrodesulfurization分类
石油、天然气工程引用本文复制引用
杨晓东,关旭,高善彬,陆雪峰,姜维,孙发民..载体性质对Pd催化剂加氢脱硫性能的影响[J].燃料化学学报,2017,45(8):980-985,6.基金项目
The project was supported by the China National Petroleum Corporation Fund (2013E-1502,2014B-2508).中国石油天然气股份公司基金(2013E-1502、2014B-2508)资助 （2013E-1502,2014B-2508）
