富B酸氧化铝的制备及以其为载体催化剂的加氢脱硫反应性能  

Preparation of alumina with riched B acid and the hydrodesulfurization performance of the catalyst using it as the support

作　　者：赵振祥 刘宾[1] 王丹[2] 张文成 吴萍萍[1] 刘晨光[1] 白鹏[1] 阎子峰[1] Zhao Zhenxiang;Liu Bin;Wang Dan;Zhang Wencheng;Wu Pingping;Liu Chenguang;Bai Peng;Yan Zifeng(State key Laboratory of Heavy Oil Processing,College of Chemical Engineering,China University of Petroleum (East China),Qingdao 266580,Shandong,China;Daqing Chemical Research Center,Petrochemical Research Institute of CNPC,Daqing 163714,Heilongjiang,China)

机构地区：[1]中国石油大学(华东)化学工程学院重质油国家重点实验室,山东青岛266580 [2]中国石油石油化工研究院大庆化工研究中心,黑龙江大庆163714

出　　处：《工业催化》2021年第6期27-34,共8页Industrial Catalysis

基　　金：国家重点研发计划项目(2017YFB0306600);山东省自然科学基金项目(ZR2017MB003)。

摘　　要：在柴油超深度脱硫过程中,具有强烷基位阻的多取代基多环类硫化物(以4,6-DMDBT为例)需经苯环加氢后才能脱除硫原子,这使得操作苛刻度提高,氢耗上升,操作成本提高,催化剂稳定性下降。本文采用氟硼酸铵为改性剂,工业拟薄水铝石为原料,通过浸渍法制备了富B酸氧化铝材料,研究发现表面氟铝比的降低是造成B酸降低的主要原因,而焙烧会使氟进入氧化铝体相。4,6-DMDBT超深度加氢脱硫反应证明了B酸是促进直接脱硫路径的必要条件,但因B酸与L酸对直接脱硫路径具有协同效应,适宜的B/L酸值是促进直接脱硫的关键。For ultra-deep desulfurization of diesel fuel,polysubstituted polycyclic sulfides with strong alkyl steric hindrance(replaced by 4,6-DMDBT)need benzene ring hydrogenation to achieve desulfurization,which increases operation severity,hydrogen consumption,operation cost and catalyst instability.In this work,NH4BF4 was used as a modifier,commercial pseudo-boehmite was used as raw material,and alumina with B acid was prepared by impregnation method.The decrease of surface F/Al ratio is the main reason for the decrease of B acid,and the calcination will favor F to enter the bulk phase of alumina.The ultra-deep hydrodesulfurization reaction of 4,6-DMDBT demonstrated that B acid was the necessary condition to promote the direct desulfurization path,but as B acid and L acid had synergistic effect on the direct desulfurization path,an appropriate B/L acid value was the key to the direct desulfurization.

关 键 词：催化剂工程 B酸 氧化铝 加氢脱硫 路径选择性 

分 类 号：O643.36[理学—物理化学] TQ426.6[理学—化学]