Al-modified mesocellular silica foam as a superior catalyst support for dibenzothiophene hydrodesulfurization

作     者：Shaotong Song Xu Yang Bo Wang Xiaofeng Zhou Aijun Duan Kebin Chi Zhen Zhao Chunming Xu Zhentao Chen Jianmei Li 宋绍彤;杨旭;王博;周晓峰;段爱军;迟克彬;赵震;徐春明;陈振涛;李建梅

作者机构：State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China Petrochemical Research Institute PetroChina Company Limited Beijing 100195 China Fushun Research Institute of Petroleum and Petrochemicals SINOPEC Fushun 113001 Liaoning China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2017年第38卷第8期

页      面：1347-1359页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by National Natural Science Foundation of China (21276277,U1463207) CNOOC Project CNPC major project the Opening Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2015K003)~~ 

主　　题：Al‐MCFs Si/Al ratio Post‐synthesis Hydrodesulfurization catalyst Dibenzothiophene 

摘      要：A series of Al‐containing mesostructured cellular silica foams(Al‐MCFs)with different Si/Al molar ratios(x;x=10,20,30,40,or50)were prepared by a post synthetic method using aluminum isopropoxide as an alumina *** corresponding NiMo catalysts supported on Al‐MCFs were prepared and evaluated using dibenzothiophene(DBT)as the probe *** the synthesized samples were characterized by small‐angle X‐ray scattering,scanning electron microscopy,nitrogen adsorption‐desorption,UV‐Vis diffuse reflectance spectroscopy,H2temperature‐programmed reduction,27Al MAS NMR,temperature‐programmed desorption of ammonia,pyridine‐FTIR,Raman spectroscopy,HRTEM,and X‐ray photoelectron spectroscopy to analyze their physicochemical properties and to gain a deeper insight of the interrelationship between the structures and the catalytic *** synthesis mechanism was proposed to involve the formation of Br?nsted acid and Lewis acid sites through the replacement of Si4+with Al3+.Aluminum introduced into MCFs by the post synthetic method has a negligible influence on the mesostructure of the parent MCFs but can form silicoaluminate materials with moderate Br?nsted *** Al‐MCFs(x)materials,the detection of tetrahedrally coordinated Al3+cations demonstrated that the Al species had been successfully incorporated into the silicon ***,the DBT hydrodesulfurization(HDS)catalytic activity of the NiMo/Al‐MCFs(x)catalysts increased with increasing Si/Al molar ratio,and reached a maximum at a Si/Al molar ratio *** interaction of Ni and Mo species with the support became stronger when Al was incorporated into the MCFs *** high activities of the NiMo/Al‐MCFs catalysts for the DBT HDS were attributed to the suitable acidity properties and good dispersions of the Ni and Mo active phases.