Molybdenum ZSM-5 zeolite catalysts for the conversion of methane to benzene

被引：94

作者：

Zhang, JZ

Long, MA

Howe, RF ^{[1
]}

机构：

[1] Univ New S Wales, Dept Chem Phys, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Dept Inorgan Chem, Sydney, NSW 2052, Australia

来源：

CATALYSIS TODAY | 1998年 / 44卷 / 1-4期

基金：

澳大利亚研究理事会;

关键词：

molybdenum; ZSM-5; methane; EXAFS;

D O I：

10.1016/S0920-5861(98)00202-8

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

This paper describes characterization studies of Mo-HZSM-5 zeolite catalysts active for the non-oxidative conversion of methane to benzene. FTIR, Al-27 and Si-29 NMR evidence is presented for migration of molybdenum into the zeolite pores during catalyst calcination at high temperatures. Mo K-edge EXAFS confirms that calcination produces highly dispersed oxomolybdenum or molybdate species which are converted to a molybdenum carbide phase under reaction conditions. Factors determining catalyst performance are discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：293 / 300

页数：8

相关论文

共 28 条

[1] COKE FORMATION IN HIGH-SILICA ZEOLITES [J].

BIBBY, DM ;

HOWE, RF ;

MCLELLAN, GD .

APPLIED CATALYSIS A-GENERAL, 1992, 93 (01) :1-34

[2] Dealumination of HZSM-5 zeolites .1. Calcination and hydrothermal treatment [J].

Campbell, SM ;

Bibby, DM ;

Coddington, JM ;

Howe, RF ;

Meinhold, RH .

JOURNAL OF CATALYSIS, 1996, 161 (01) :338-349

[3] Promotional effect of Pt on non-oxidative methane transformation over Mo-HZSM-5 catalyst [J].

Chen, LY ;

Lin, LW ;

Xu, ZS ;

Zhang, T ;

Li, XS .

CATALYSIS LETTERS, 1996, 39 (3-4) :169-172

[4] DEHYDRO-OLIGOMERIZATION OF METHANE TO ETHYLENE AND AROMATICS OVER MOLYBDENUM/HZSM-5 CATALYST [J].

CHEN, LY ;

LIN, LW ;

XU, ZS ;

LI, XS ;

ZHANG, T .

JOURNAL OF CATALYSIS, 1995, 157 (01) :190-200

[5] XFIT - AN INTERACTIVE EXAFS ANALYSIS PROGRAM [J].

ELLIS, PJ ;

FREEMAN, HC .

JOURNAL OF SYNCHROTRON RADIATION, 1995, 2 :190-195

[6]

HARRISON WT, 1988, J SOLID STATE CHEM, V76, P329

[7]

Knosinger H., 1993, CATALYSIS, V10, P1

[8] MOLYBDENUM CARBIDE CATALYSTS .1. SYNTHESIS OF UNSUPPORTED POWDERS [J].

LEE, JS ;

OYAMA, ST ;

BOUDART, M .

JOURNAL OF CATALYSIS, 1987, 106 (01) :125-133

[9] MOLYBDENUM CARBIDE CATALYSTS .2. TOPOTACTIC SYNTHESIS OF UNSUPPORTED POWDERS [J].

LEE, JS ;

VOLPE, L ;

RIBEIRO, FH ;

BOUDART, M .

JOURNAL OF CATALYSIS, 1988, 112 (01) :44-53

[10] Remarkable non-oxidative conversion of methane to naphthalene and benzene on Co and Fe modified Mo/HZSM-5 catalysts [J].

Liu, ST ;

Dong, Q ;

Ohnishi, R ;

Ichikawa, M .

CHEMICAL COMMUNICATIONS, 1997, (15) :1455-1456