Study on the mechanism of partial oxidation of methane to synthesis gas over molybdenum carbide catalyst

被引：62

作者：

Xiao, TC ^{[1
]}

Hanif, A ^{[1
]}

York, APE ^{[1
]}

Nishizaka, Y ^{[1
]}

Green, MLH ^{[1
]}

机构：

[1] Univ Oxford, Inorgan Chem Lab, Wolfson Catalysis Ctr, Oxford OX1 3QR, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2002年 / 4卷 / 18期

关键词：

D O I：

10.1039/b204347e

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：

The performance of molybdenum carbide catalyst for partial oxidation of methane to syngas has been evaluated in a micro-reactor under various conditions. The molybdenum carbide catalyst is stable in methane partial oxidation to syngas at high reaction temperatures, high pressures and with a low space velocity of reactants. Pre-treatment has a significant effect on the catalyst activity and selectivity. The reaction mechanism over molybdenum carbide has been studied using C-13 isotope exchange and in situ laser Raman. It is seen that the carbon in the lattice of the molybdenum carbide takes an active part in the reaction. The deactivation of molybdenum carbide catalyst results from the oxidation of the catalyst surface.

引用

页码：4549 / 4554

页数：6

共 36 条

[1] SELECTIVE OXIDATION OF METHANE TO SYNTHESIS GAS-USING TRANSITION-METAL CATALYSTS [J].

ASHCROFT, AT ;

CHEETHAM, AK ;

FOORD, JS ;

GREEN, MLH ;

GREY, CP ;

MURRELL, AJ ;

VERNON, PDF .

NATURE, 1990, 344 (6264) :319-321

[2] Ni/Mg/Al anionic clay derived catalysts for the catalytic partial oxidation of methane - Residence time dependence of the reactivity features [J].

Basile, F ;

Basini, L ;

D'Amore, M ;

Fornasari, G ;

Guarinoni, A ;

Matteuzzi, D ;

Del Piero, G ;

Trifiro, F ;

Vaccari, A .

JOURNAL OF CATALYSIS, 1998, 173 (02) :247-256

[3] PARTIAL OXIDATION OF METHANE TO SYNGAS OVER CO/MGO CATALYSTS - IS IT LOW-TEMPERATURE [J].

CHANG, YF ;

HEINEMANN, H .

CATALYSIS LETTERS, 1993, 21 (3-4) :215-224

[4] NiO alkaline earth oxide catalysts for oxidative methane-to-syngas conversion:: Influence of alkaline earth oxide on the surface properties and temperature-programmed reduction/reaction by H2 and methane [J].

Choudhary, VR ;

Rajput, AM ;

Mamman, AS .

JOURNAL OF CATALYSIS, 1998, 178 (02) :576-585

[5] LOW-TEMPERATURE OXIDATIVE CONVERSION OF METHANE TO SYNGAS OVER NIO-CAO CATALYST [J].

CHOUDHARY, VR ;

RAJPUT, AM ;

PRABHAKAR, B .

CATALYSIS LETTERS, 1992, 15 (04) :363-370

[6] New catalysts for the conversion of methane to synthesis gas: Molybdenum and tungsten carbide [J].

Claridge, JB ;

York, APE ;

Brungs, AJ ;

Marquez-Alvarez, C ;

Sloan, J ;

Tsang, SC ;

Green, MLH .

JOURNAL OF CATALYSIS, 1998, 180 (01) :85-100

[7] CHANGES IN WORLD GAS-RESERVES AND RESOURCES [J].

CORNOTGANDOLPHE, S .

ENERGY EXPLORATION & EXPLOITATION, 1995, 13 (01) :3-16

[8] Modeling the partial oxidation of methane in a short-contact-time reactor [J].

Deutschmann, O ;

Schmidt, LD .

AICHE JOURNAL, 1998, 44 (11) :2465-2477

[9] ARE THE EQUILIBRIUM CONCENTRATIONS OF CO AND H-2 EXCEEDED DURING THE OXIDATION OF CH4 OVER A NI/YB2O3 CATALYST [J].

DISSANAYAKE, D ;

ROSYNEK, MP ;

LUNSFORD, JH .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (15) :3644-3646

[10] PARTIAL OXIDATION OF METHANE TO CARBON-MONOXIDE AND HYDROGEN OVER A NI/AL2O3 CATALYST [J].

DISSANAYAKE, D ;

ROSYNEK, MP ;

KHARAS, KCC ;

LUNSFORD, JH .

JOURNAL OF CATALYSIS, 1991, 132 (01) :117-127

← 1 2 3 4 →