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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (3): 36-41.DOI: 10.19912/j.0254-0096.tynxb.2020-1220

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Ni-Co双金属催化剂上沼气重整制氢宏观动力学

徐军科1,2, 羌宁2   

  1. 1.上海市宝山区环境监测站,上海 201901;
    2.同济大学环境科学与工程学院,上海 200092
  • 收稿日期:2020-11-13 发布日期:2022-09-28
  • 通讯作者: 羌 宁(1965—),男,博士、副教授,主要从事大气污染治理方面的研究。tj1926@126.com

MACROKINETICS OF BIOGAS REFORMING FOR HYDROGEN PRODUCTION OVER Ni-Co BIMETALLIC CATALYST

Xu Junke1,2, Qiang Ning2   

  1. 1. Shanghai Baoshan Environmental Monitoring Station, Shanghai 201901, China;
    2. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • Received:2020-11-13 Published:2022-09-28

摘要: 用传统湿式浸渍法制备La2O3掺杂的商业γ-Al2O3负载的沼气重整催化剂Ni-Co/La2O3-γ-Al2O3,通过对NiCo双金属催化剂上沼气重整制氢在常压下的宏观动力学分析,得出该催化剂上CH4与CO2消耗、H2与CO生成时的表观反应速率方程。通过改变进料中CH4与CO2的分压,求出各物质的反应分级数,确定总反应为拟一级反应。通过改变反应温度并利用Arrhenius方程求解出各物质的表观活化能与指前因子,从而推导出常压下反应温度为500~900 ℃时,CH4与CO2的表观消耗速率方程以及H2与CO的表观生成速率方程。

关键词: 镍, 钴, 双金属催化剂, 沼气重整, 制氢, 宏观动力学

Abstract: Ni-Co bimetallic catalysts(Ni-Co/La2O3-γ-Al2O3) supported by commercial γ-Al2O3 modified with La2O3 were prepared by conventional incipient wetness impregnation for biogas reforming. A macro-kinetic study on biogas reforming in Ni-Co bimetallic catalyst has been investigated. The apparent reaction rate equations of CH4 and CO2 consumption and H2 and CO production were suggested. The partial orders of reaction of CH4 and CO2 consumption and H2 and CO production were solved by changing partial pressures of CH4 and CO2 in feed. The total reaction order is pseudo first-order. Apparent activation energy and preexponential factor of the catalysts were also calculated by varying the reaction temperature. The apparent reaction rate equations of CH4 and CO2 consumption and H2 and CO production were deduced at the temperature from 500 to 900 ℃ in the normal atmospheric pressure.

Key words: nickel, cobalt, bimetallic catalyst, biogas reforming, hydrogen production, macrokinetics

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