High-temperature stable and highly active/selective supported NiCoMgCeOx catalyst suitable for autothermal reforming of methane to syngas

被引：66

作者：

Choudhary, VR ^{[1
]}

Mondal, KC ^{[1
]}

Mamman, AS ^{[1
]}

机构：

[1] Natl Chem Lab, Chem Engn & Proc Dev Div, Pune 411008, Maharashtra, India

来源：

JOURNAL OF CATALYSIS | 2005年 / 233卷 / 01期

关键词：

zirconia-haffnia-supported NiCoMgOx; catalyst; zirconia-haffnia-supported NiCoMgCeOx catalysts; catalytic partial oxidation of methane; autothermal reforming of methane; steam reforming of methane; CO2 reforming of methane; high-temperature stable supported NiCoMgCeOx catalyst;

D O I：

10.1016/j.jcat.2005.04.019

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：

Low-surface-area, macroporous, zirconia-haffnia-supported NiCoMgOx and NiCoMgCeOx (Ni/Co/Mg/Ce = 1/0.2/1.2/0.0 or 1.2) catalysts, precalcined at high temperature ( 1400 degrees C for 4 h), showed both high activity (> 98% conversion) and selectivity ( > 95%) in the catalytic partial oxidation of methane (CPOM) to syngas. Their performance remained unchanged even after they were subjected to higher temperature (> 2000 degrees C for 30 min) or a number of high-temperature (> 2000 degrees C) shocks, due to their direct exposure to an oxyacetylene flame. The supported NiCoMgCeOx, however, showed superior performance in the steam and CO2 reforming reactions because of its much higher lattice oxygen mobility. Hence it is more suitable for the autothermal reforming of methane. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：36 / 40

页数：5

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