Bimetallic catalysts for the catalytic combustion of methane using microreactor technology

被引：24
|
作者：
O'Connell, M. [1 ]
Kolb, G. [1 ]
Zapf, R. [1 ]
Men, Y. [1 ]
Hessel, V. [1 ,2 ]
机构：
[1] Inst Mikrotech Mainz GmbH, D-55129 Mainz, Germany
[2] Eindhoven Univ Technol, Dept Chem Engn & Chem, NL-5600 MB Eindhoven, Netherlands
来源：
CATALYSIS TODAY | 2009年 / 144卷 / 3-4期
关键词：
Microchannels; Combustion; Methane; Platinum; Alumina; Molybdenum; Tungsten; LOW-TEMPERATURE; PT-MO; HYDROGEN-PRODUCTION; COMPLETE OXIDATION; PLATINUM; HYDROCARBONS; PT/AL2O3; TUNGSTEN; OXIDE; CO;
D O I：
10.1016/j.cattod.2008.10.053
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Pt-W and Pt-Mo based catalysts were evaluated for methane combustion using a sandwich-type microreactor. Alumina washcoated microchannels were impregnated with platinum in combination with and promoted with tungsten and molybdenum and compared with commercially available Pt/Al2O3 catalysts. Catalysts were tested in the range of 300-700 degrees C with flow rates adjusted to GHSV of 74,000 h(-1) and WHSV of 316 L h(-1) g(-1). Catalysts containing tungsten were found to be the most active and the most stable possibly due to a metal interaction effect. A Pt-W/gamma-Al2O3 containing 4.6 wt% Pt and 9 wt% W displayed the highest activity with full conversion at 600 degrees C and a selectivity to CO2 of 99%. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：306 / 311
页数：6
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