Catalysts Based on Immobilized Ionic Liquids with Bronsted Acid Sites in the Oxidation of Dibenzothiophene

被引：1
|
作者：
Akopyan, A. V. [1 ]
Eseva, E. A. [1 ]
Polikarpova, P. D. [1 ]
Kedalo, A. A. [1 ]
Anisimov, A. V. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
来源：
MOSCOW UNIVERSITY CHEMISTRY BULLETIN | 2021年 / 76卷 / 03期
基金：
俄罗斯科学基金会;
关键词：
oxidative desulfurization; immobilized ionic liquids; dibenzothiophene; hydrogen peroxide; phosphomolybdic acid; EXTRACTIVE DESULFURIZATION; DEEP DESULFURIZATION; FUELS; OILS;
D O I：
10.3103/S0027131421030020
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Immobilized ionic liquids with Bronsted acidity containing fragments of nicotinic and phosphomolybdic acids are synthesized by two methods: suspension impregnation and chemical immobilization. The obtained catalysts are characterized by the low-temperature adsorption/desorption of nitrogen, elemental analysis, and transmission electron microscopy. The conditions for exhaustive oxidation of dibeznothiophene are determined: 30 min, the molar ratio of hydrogen peroxide and dibenzothiophene = 6 : 1, the weight fraction of catalyst = 0.5 wt %, and T = 80 degrees C. The catalysts obtained by impregnation lose their activity after regeneration and the catalysts obtained by chemical immobilization retain their activity after at least five oxidation/regeneration cycles.
引用
收藏
页码：215 / 223
页数：9
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