Efficient oxidative-adsorptive desulfurization over highly dispersed molybdenum oxide supported on hierarchically mesoporous silica

被引：7

作者：

Wang, Huan ^{[1
]}

Du, Guo ^{[1
]}

Chen, Shaohua ^{[1
]}

Jia, Jiaqing ^{[1
]}

Sun, Pingchuan ^{[2
]}

Chen, Tiehong ^{[1
]}

机构：

[1] Nankai Univ, Inst New Catalyt Mat Sci, Sch Mat Sci & Engn, Key Lab Adv Energy Mat Chem MOE, Tianjin 300350, Peoples R China

[2] Nankai Univ, Coll Chem, Key Lab Funct Polymer Mat MOE, Tianjin 300071, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2022年 / 645卷

关键词：

Hierarchically porous structure; Highly dispersed molybdenum oxide; Wetness impregnation; Room temperature; Oxidative-adsorptive desulfurization; DEEP DESULFURIZATION; DIESEL FUEL; CATALYST; DIBENZOTHIOPHENE; CARBON; HYDRODESULFURIZATION; MOO3/SIO2; LIQUID; ACID; DBT;

D O I：

10.1016/j.colsurfa.2022.128922

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hierarchically porous silica (NKM-5) was used as support to load different amounts of Mo to prepare xMo/NKM5 catalysts (x was the weight percentage of Mo added during synthesis) by wetness impregnation method. Due to the hierarchically porous architecture and highly dispersed molybdenum oxide, 3Mo/NKM-5 with Mo loading of 3 wt% exhibited outstanding oxidative desulfurization activity. Complete conversion of 500 ppm dibenzothiophene was achieved within 20 min at room temperature, and the turnover frequency value was determined to be 28.0 h(-1) after 2 min of reaction. Furthermore, xMo/NKM-5 possessed a superior adsorptive performance for oxidative product dibenzothiophene sulfone, achieving adsorption rate of 77.7%-85.5% through oxidative adsorptive process. Hierarchically porous xMo/NKM-5 materials with the advantages of low cost, high activity, and excellent adsorptive capacity, are expected to be potential candidates for industrial desulfurization process.

引用

页数：11

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