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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.659 CiteScore™: 1.2

ISSN Druckformat: 2150-3621
ISSN Online: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.2016015646
pages 81-89

CHARACTERISTICS OF HYDROGEN-ASSISTED CATALYTIC OXIDATION OF CH4/AIR MIXTURES OVER METAL FOAM-BASED MONOLITHIC CATALYST

Yanxia Li
The Key Laboratory of Heat Transfer and Energy Conversion, Ministry of Education of PRC, Beijing University of Technology, Beijing 100124, China
Tongran Wu
The Key Laboratory of Heat Transfer and Energy Conversion, Ministry of Education of PRC, Beijing University of Technology, Beijing 100124, China
Chaoming Luo
The Key Laboratory of Heat Transfer and Energy Conversion, Ministry of Education of PRC, Beijing University of Technology, Beijing 100124, China
Zhongliang Liu
Key Laboratory of EHTEC, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Education Commission, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China

ABSTRAKT

The objective of this paper is to study experimentally the characteristics of hydrogen-assisted catalytic oxidation of hydrocarbon. The present work focuses on investigating the effects of hydrogen-assisted catalytic oxidation of methane−air over a metal foam-based monolithic catalyst. The l%Pd/Al2O3/Fe−Ni foam monolithic catalyst was prepared by wet impregnation. The influence of the addition of H2, mixture flow rate, and of the fuel/air equivalent ratio on the catalytic oxidation characteristics was investigated in a continuous flow fixed-bed reaction system with a quartz tube reactor. The compositions of outlet gas were analyzed online by gas chromatography (Agilent 7890A). The experimental results clearly showed that the addition of hydrogen decreases the conversion of methane, as compared with the methane/air combustion. Moreover, the reaction temperature has a very strong influence on methane conversion. It is also shown that the conversion of methane decreases considerably with increase in the hydrogen percentage of the fuels at a certain value of equivalence ratio. In addition, the conversion of methane decreases distinctly with increase in the equivalence ratio; furthermore, the mixture flow rate has a limited influence on the ignition temperature and burn off temperature.


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