Heteropolyacids supported on hierarchically macro/mesoporous TiO_(2):efficient catalyst for deep oxidative desulfurization of fuel  

作　　者：Gao-Chen Yang Qi-Yun Pan Peng Yang Yi-Si Liu Yue Du Kai Wang 

机构地区：[1]School of Materials Science and Engineering,Hubei University,Wuhan 430070,China [2]Institute for Advanced Materials,Hubei Normal University,Huangshi 435002,China [3]School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Tungsten》2022年第1期28-37,共10页钨科技（英文）

基　　金：This work was supported by National Nature Science Foundation of China(Grant Nos.52104254,22008058,and 51901074).

摘　　要：The fabrication of polyoxometalates(POMs)-modified TiO_(2)catalysts with connected pore structure has attracted great interests due to its prominent effect on mass transfer and catalytic oxidation activity.Here,we report a series of hierarchically macro/mesoporous(M/m)phosphotungstic acid(HPW)/TiO_(2)composites,which are fabricated by colloidal crystal template method and applied as deep desulfurization catalyst in fuel oil.As-synthesized hierarchical HPW/TiO_(2)composite is interconnected by ordered macroporous channel with disordered mesoporous embedded on pore walls.Moreover,Keggintype HPW is homogeneously dispersed on the TiO_(2)matrix.Hierarchical macro/mesoporous HPW/TiO_(2)shows an excellent catalytic performance,the removal rate for dibenzothiophene in model fuel reaches 99%under the optimum conditions.This high performance of the three-dimensional ordered macropores(3DOM)HPW/TiO_(2)can be attributed to its hierarchically porous which is highly beneficial for the mass transfer during the catalytic process.Moreover,the used catalyst could be regenerated by centrifugation and only slight decreasing of the catalytic activity after five cycles.

关 键 词：Oxidative desulfurization HETEROPOLYACID Macro/mesoporous Hierarchical porous materials 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]