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论文类型：期刊论文

发表时间：2009-02-28

发表刊物：CATALYSIS TODAY

收录刊物：SCIE、EI

卷号：140

期号：3-4

页面范围：192-196

ISSN号：0920-5861

关键字：Ti-containing molecular sieves; Oxidative desulphurization; H2O2; N-containing compounds

摘要：The oxidative removal of organic sulfur compounds from model fuel with H2O2 over Ti-containing molecular sieves in the presence of N-containing compounds had been studied. The effect of the types and amounts of nitrides on oxidative desulphurization were investigated. It has been shown that pyridine and pyrrole have adverse impact on the oxidation of thiophene and lead to the decrease of corresponding removal rate. The pyridine has stronger influence than pyrrole. Quinoline and indole have no impact on the final removal rate of thiophene. However, the two kinds of nitrides, as well as carbazole, have obvious impact on the oxidation removal of benzothiophene and 4,6-dimethyl dibenzothiophene. The effect of nitrides on oxidative desulphurization can be attributed to the strong adsorption of nitrides and their oxidized products on the active sites of catalysts. For pyridine and quinoline, which are basic nitrides, their adsorptions on catalysts are even stronger than that of sulfides. (c) 2008 Elsevier B.V. All rights reserved.