Oxidative desulphurisation of oils via hydrogen peroxide and heteropolyanion catalysis

被引：355

作者：

Collins, FM

Lucy, AR

Sharp, C

机构：

[1] BP CHEM,KINGSTON HULL,N HUMBERSIDE,ENGLAND

[2] BP CHEM,SUNBURY,MIDDX,ENGLAND

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1997年 / 117卷 / 1-3期

关键词：

catalysis; desulphurisation; dibenzothiophene; oxidation; phase transfer; FUEL-OIL; DESULFURIZATION; EXTRACTION;

D O I：

10.1016/S1381-1169(96)00251-8

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：

Oxidation of dibenzothiophene with hydrogen peroxide using phosphotungstic acid as catalyst and tetraoctylammonium bromide as phase transfer agent in a mixture of water and toluene has been studied. Catalysed decomposition of hydrogen peroxide competes with dibenzothiophene oxidation but by choice of suitable conditions yields of dibenzothiophene sulphone approaching 100% may be obtained. Treatment of gas oils with this technology shows that all the sulphur compounds present are oxidised by this catalyst system and highly substituted dibenzothiophenes are the most readily oxidised of species containing a thiophene nucleus. Oxidised sulphur compounds can be separated from the oil by adsorption on silica gel. The use of oxidation and adsorption in a process for desulphurisation of gas oils is discussed.

引用

页码：397 / 403

页数：7

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