二元复合氧化物载体在加氢脱硫催化剂中的应用进展  

Progress in application of binary composite oxides as supports for hydrodesulfurization catalysts

作　　者：周文武 何欣欣 唐小原 周安宁[1] 陈治平 黄志豪 白业兴 ZHOU Wenwu;HE Xinxin;TANG Xiaoyuan;ZHOU Anning;CHEN Zhiping;HUANG Zhihao;BAI Yexing(College of Chemistry and Chemical Engineering,Xi'an University of Science and Technology,Xi’an 710054,China)

机构地区：[1]西安科技大学化学与化工学院,陕西西安710054

出　　处：《燃料化学学报（中英文）》2024年第9期1361-1374,共14页Journal of Fuel Chemistry and Technology

摘　　要：加氢脱硫技术对实现劣质油品清洁化、低碳化与多元化高效利用至关重要,其关键是高性能催化剂的开发,核心之一是适宜催化剂载体材料的创新。本工作分别总结了向Al_(2)O_(3)及TiO_(2)中引入第二组元后作为加氢脱硫催化剂载体的研究进展。第二组元氧化物的引入克服了Al_(2)O_(3)载体酸类型单一及商用催化剂金属与载体间相互作用过强等缺点,同时保持了较大的比表面积;第二组元氧化物能够有效提升TiO_(2)载体材料的热稳定性及比表面积的同时调节了载体材料表面酸性等。究其原因在于第二组元的引入可显著改变Al_(2)O_(3)或TiO_(2)表面羟基环境,进而促进了活性金属前驱体在载体表面的锚定和分散,有利于更多NiMo(W)S活性相的形成,提升了催化剂的加氢脱硫性能。Hydrodesulfurization(HDS)technique has been considered to play a crucial role in the clean,lowcarbon,and diverse effective utilization of inferior crude distillates.The key to this technology is the development of catalyst with excellent catalytic performance.After decades of development,although the HDS performances for most sulfides of the non-noble metal supported catalysts have been greatly improved,but their catalytic activities for highly refractory sulfides are still limited due to the over-strong metal and support interaction(MSI),insufficient acidity,poor textural properties and damnable surface environments.Researches across the world made a lot of efforts to solve the above problems and the developing of novel support candidates is considered as the most efficient solution.In this review,we summarized the developments for the applications of binary Al_(2)O_(3) based composite oxides and binary TiO_(2) based composite oxides as support for hydrodesulfurization catalyst and systematically analyzed the effect of the second component on both the properties of the catalyst,mainly focused on the acidity property,MSI,pore structures and the catalytic performances,and the applications of the corresponding catalysts in thiophene,dibenzoethiophene,4,6-dimethyldibenzothiophene and inferior diesel fuels.It was concluded that both the MSI and the acidity can be effectively modulated after incorporation of appropriate amount of SiO2 into Al_(2)O_(3) support,which can be attributed to the successful formation of Al−OH−Si linkages over the support surface and thus prevented the formation of excessive Mo−O−Al bonds,resulted in the enhanced hydrogenation activity of the corresponding catalyst which further contributed to the excellent HDS performance.The introduction of ZrO_(2) into Al_(2)O_(3) support can also modulate the MSI and the acidity due to the similar reasons,except for that,researchers also found that the reducibility of the active phase precursors can be effectively enhanced,which is favorable for t

关 键 词：二元复合氧化物 铝基氧化物 钛基氧化物 载体表面环境 加氢脱硫催化剂 

分 类 号：TE65[石油与天然气工程—油气加工工程]