Effects of microwaves on selective oxidation of toluene to benzoic acid over a V2O5/TiO2 system

被引：38

作者：

Liu, Y ^{[1
]}

Lu, Y ^{[1
]}

Liu, P ^{[1
]}

Gao, RX ^{[1
]}

Yin, YQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 1998年 / 170卷 / 02期

关键词：

microwave; toluene; selective oxidation; modification; V2O5/TiO2; catalyst;

D O I：

10.1016/S0926-860X(98)00045-3

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：

Two series of catalysts, V2O5/TiO2 and modified V2O5/TiO2, were prepared with a conventional impregnation method. They were tested in the selective oxidation of toluene to benzoic acid under microwave irradiation. The reaction conditions were optimized over V2O5/TiO2 It was found that in the microwave catalytic process the optimum reactor bed temperature of the titled reaction decreases to 500 K (600 K in the conventional process). The modification of V2O5/TiO2 With MoO3, WO3, Nb2O5 or Ta2O5, which has no negative influence on the reaction in the conventional catalytic process, can greatly promote the catalytic activities in the microwave process, leading to a high yield of benzoic acid (similar to 41%). The effects of microwave electromagnetic held on the catalysts are discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：207 / 214

页数：8

共 23 条

[1]

[Anonymous], CHEM SOC REV

[2] MICROWAVE EFFECTS ON THE OXIDATIVE COUPLING OF METHANE OVER PROTON CONDUCTIVE CATALYSTS [J].

CHEN, CG ;

HONG, PJ ;

DAI, SH ;

KAN, JD .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1995, 91 (07) :1179-1180

[3]

EMIG G, 1987, CATAL TODAY, V1, P477

[4] INFRARED INVESTIGATION OF THE ADSORPTION AND REACTIONS OF METHANOL ON V2O5/TIO2 CATALYSTS [J].

FEIL, FS ;

VANOMMEN, JG ;

ROSS, JRH .

LANGMUIR, 1987, 3 (05) :668-673

[5] STRUCTURE AND ACIDITY OF VANADIUM-OXIDE LAYERED ON TITANIA (ANATASE AND RUTILE) [J].

HATAYAMA, F ;

OHNO, T ;

MARUOKA, T ;

ONO, T ;

MIYATA, H .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (16) :2629-2633

[6] VANADIUM-PHOSPHORUS OXIDE CATALYSTS FOR THE SELECTIVE OXIDATION OF C-4 HYDROCARBONS TO MALEIC-ANHYDRIDE [J].

HODNETT, BK .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1985, 27 (03) :373-424

[7]

LEE GD, 1984, HWAHAK KONGHAK, V22, P25

[8]

MALOW M, 1980, HYDROC P, P149

[9] SELECTIVE OXIDATION OF TOLUENE OVER V2O5/TIO2 CATALYSTS - EFFECT OF VANADIUM LOADING AND OF MOLYBDENUM ADDITION ON THE CATALYTIC PROPERTIES [J].

MATRALIS, HK ;

PAPADOPOULOU, C ;

KORDULIS, C ;

ELGUEZABAL, AA ;

CORBERAN, VC .

APPLIED CATALYSIS A-GENERAL, 1995, 126 (02) :365-380

[10] Selective oxidation of toluene to benzoic acid catalyzed by modified vanadium oxides [J].

Miki, J ;

Osada, Y ;

Konoshi, T ;

Tachibana, Y ;

Shikada, T .

APPLIED CATALYSIS A-GENERAL, 1996, 137 (01) :93-104

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