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作者:

Sang, Li-Xia (Sang, Li-Xia.) (学者:桑丽霞) | Wang, Guo-Rui (Wang, Guo-Rui.) | Sun, Biao (Sun, Biao.) | Wu, Yu-Ting (Wu, Yu-Ting.) (学者:吴玉庭) | Ma, Chong-Fang (Ma, Chong-Fang.)

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EI Scopus PKU CSCD

摘要:

Solar CO2 reforming of methane has attracted a great attention because it can realize energy storage of high-temperature heat from concentrated solar radiation and optimal utilization of resources of natural gas. Catalytic active absorber has a key role on absorption of solar energy and reforming of methane and becomes focus of solar reforming of methane research. Catalytic active absorber, Ru/Al2O3/AISI316, Ni/Al2O3 (MgO)/AISI316, were firstly fabricated by using AISI316 metal foam as the matrix. The surface properties of the resulting catalytic active absorber were characterized by means of XRD, H2-TPR and CO2-TPD techniques. Combination of the reactivity behavior of the as-prepared samples in a continuous flow fixed-bed reaction system with a quartz tube reactor, it can be found that the high activity and the long-term stability of Ru/Al2O3/AISI316 foam was unaffected by the components changes of in AISI316 foam matrix during the high temperature reaction. For nickel based catalytic active absorber, the activity for methane reforming of CO2 can be improved by adding the promoter MgO or increasing the Al2O3 coating. Based on the characterization of XRD and H2-TPR, AISI316 foam matrix can enhance the interaction between the Al2O3 coating and the active species Ru or Ni, particularly for Ru/Al2O3/AISI316, the formed Ru-O-Al surface species can lead to the increase of high dispersion of active species. From the peak area of adsorption and desorption behavior, the activating and absorption ability of CO2 on Ru/Al2O3/AISI316 is higher than that of Ni/Al2O3/AISI316, which ascribes to the more active sites on the surface of the catalytic active absorber.

关键词:

Aluminum Aluminum coatings Carbon dioxide Catalytic reforming Coatings Foams Magnesia Metals Methane Natural gas deposits Nickel Nickel coatings Solar absorbers Solar energy Surface properties

作者机构:

  • [ 1 ] [Sang, Li-Xia]Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Wang, Guo-Rui]Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, Beijing University of Technology, Beijing 100124, China
  • [ 3 ] [Sun, Biao]Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, Beijing University of Technology, Beijing 100124, China
  • [ 4 ] [Wu, Yu-Ting]Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, Beijing University of Technology, Beijing 100124, China
  • [ 5 ] [Ma, Chong-Fang]Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Ministry of Education, Key Laboratory of Heat Transfer and Energy Conversion of Beijing Municipality, Beijing University of Technology, Beijing 100124, China

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来源 :

Journal of Molecular Catalysis

ISSN: 1001-3555

年份: 2013

期: 3

卷: 27

页码: 287-294

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