Carbon deposition behavior of a Co–Ni aerogel catalyst in CH4 oxy-CO2 reforming using various types of reactors
Carbon deposition behavior of a Co–Ni aerogel catalyst in CH4 oxy-CO2 reforming using various types of reactors
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DOI：
10.1016/j.ijhydene.2014.07.128
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发表时间：
2014-09
影响因子：
7.2
通讯作者：
Chen Lin;Z. Hao;Tian-zu Yang;Wei-feng Liu;Duchao Zhang
中科院分区：
文献类型：
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作者：
Chen Lin;Z. Hao;Tian-zu Yang;Wei-feng Liu;Duchao Zhang
采用失活方法研究了Co-Ni气凝胶催化剂在磁场辅助流化床（MAFB）、常规流化床和固定床反应器中的积炭行为。用TG/DSC和FESEM对失活催化剂进行了分析。结果表明，反应器对废催化剂上的碳物种的数量和类型有影响。MAFB反应器中废催化剂上的碳量为11.7重量%，其为10.8重量%，和2.6重量%低于固定床和常规流化床反应器中的那些。流化行为分析表明，采用MAFB后，催化剂的团聚和气泡尺寸明显减小，这是反应器抗积炭能力增强的原因。
Carbon deposition behavior of a Co–Ni aerogel catalyst in CH4oxy-CO2reforming is investigated using a deactivation method in three types of reactors including a magnetic field assisted fluidized bed (MAFB) reactor, a conventional fluidized bed reactor and a fixed bed reactor. The spent catalysts are analyzed by TG/DSC and FESEM. It is found that the reactor influences the amount as well as type of carbon species on the spent catalysts. The amount of carbon on the spent catalyst in the MAFB reactor is 11.7 wt.%, which is 10.8 wt.% and 2.6 wt.% less than those in the fixed bed and conventional fluidized bed reactors. Fluidization behavior analysis reveals that agglomerate and bubble size of the catalyst are obviously decreased with the application of the MAFB, which should be accounted for the enhanced carbon resistance of the reactor.