Oxidation of dibenzothiophene with cumene hydroperoxide on MoO3/SiO2 modified with alkaline earth metals

被引：52

作者：

Chang, Jie ^{[1
]}

Wang, Anjie ^{[1
,2
]}

Liu, Jing ^{[1
,2
]}

Li, Xiang ^{[1
,2
]}

Hu, Yongkang ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, State Key Lab Fine Chem, Dept Catalysis, Dalian 116012, Peoples R China

[2] Dalian Univ Technol, Liaoning Key Lab Petrochem Technol & Equipments, Dalian 116012, Peoples R China

来源：

CATALYSIS TODAY | 2010年 / 149卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Oxidative desulfurization; Cumene hydroperoxide; Dibenzothiophene; MoO3/SiO2; Calcium; DEEP DESULFURIZATION; SELECTIVE OXIDATION; CATALYTIC-OXIDATION; HYDROGEN-PEROXIDE; MOLECULAR-OXYGEN; DIESEL FUEL; SYSTEM; OIL; KINETICS; METHANE;

D O I：

10.1016/j.cattod.2009.04.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic oxidation of dibenzothiophene (DBT) in decalin was performed using an oil-soluble oxidant, cumene hydroperoxide (CHP), over molybdenum oxide (MoO3) supported oil silica. The effects Of MoO3 loading, reaction time and the molar ratio of CHP/DBT were investigated. At a MoO3 loading of 15 wt%, the conversion of DBT reached 82% at 70 C, WHSV 30 h (1), and O/S molar ratio 3. Alkaline earth metals, such as Ca, Ba, Sr and Mg were introduced oil the Surface of silica, prior to the impregnation of MoO3. The results showed that the activity in the oxidation of DBT with CHP decreased in the order MoO3/Ca-SiO2 > MoO3/Ba-SiO2 > MoO3/SiO2 > MoO3/Sr-SiO2 > MoO3/Mg-SiO2. The MoO3/Ca-SiO2 catalysts were characterized by XRD The DBT conversions oil MoO3/Ca-SiO2 Catalysts with various Ca/Mo ratios were studied. When the Ca/Mo ratio was 0.05, the DBT conversion was the highest (95%) at 60 C, WHSV 30 h(-1), and C/S molar ratio 3.0. (C) 2009 Elsevier B.V All rights reserved.

引用

页码：122 / 126

页数：5

共 25 条

[1] Science and technology of novel processes for deep desulfurization of oil refinery streams: A review [J].

Babich, IV ;

Moulijn, JA .

FUEL, 2003, 82 (06) :607-631

[2] SELECTIVE OXIDATION OF METHANE TO FORMALDEHYDE ON SUPPORTED MOLYBDATE CATALYSTS [J].

BANARES, MA ;

FIERRO, JLG .

CATALYSIS LETTERS, 1993, 17 (3-4) :205-211

[3] EFFECT OF ALKALI-METAL CATIONS ON THE STRUCTURE OF MO(VI) SIO2 CATALYSTS AND ITS RELEVANCE TO THE SELECTIVE OXIDATION OF METHANE AND METHANOL [J].

BANARES, MA ;

SPENCER, ND ;

JONES, MD ;

WACHS, IE .

JOURNAL OF CATALYSIS, 1994, 146 (01) :204-210

[4] Highly efficient deep desulfurization of fuels by chemical oxidation [J].

Campos-Martin, JM ;

Capel-Sanchez, MC ;

Fierro, JLG .

GREEN CHEMISTRY, 2004, 6 (11) :557-562

[5] Oxidative desulphurisation of oils via hydrogen peroxide and heteropolyanion catalysis [J].

Collins, FM ;

Lucy, AR ;

Sharp, C .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1997, 117 (1-3) :397-403

[6] Ultrasound-assisted, base-catalyzed oxidation of 4,6-dimethyldibenzothiophene in a biphasic diesel-acetonitrile system [J].

Deshpande, A ;

Bassi, A ;

Prakash, A .

ENERGY & FUELS, 2005, 19 (01) :28-34

[7]

FARHAN A, 2007, APPL CATAL B-ENVIRON, V73, P311

[8] REACTIVITIES, REACTION NETWORKS, AND KINETICS IN HIGH-PRESSURE CATALYTIC HYDROPROCESSING [J].

GIRGIS, MJ ;

GATES, BC .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1991, 30 (09) :2021-2058

[9] KINETICS AND MECHANISM OF OXIDATION OF DIBENZOTHIOPHENE IN HYDROCARBON SOLUTION - OXIDATION BY AQUEOUS HYDROGEN PEROXIDE-ACETIC ACID MIXTURES [J].

HEIMLICH, BN ;

WALLACE, TJ .

TETRAHEDRON, 1966, 22 (10) :3571-&

[10] Selective oxidations on recoverable catalysts assembled in emulsions [J].

Li, C ;

Gao, JB ;

Jiang, ZX ;

Wang, SG ;

Lu, HY ;

Yang, YX ;

Jing, F .

TOPICS IN CATALYSIS, 2005, 35 (1-2) :169-175

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