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Effect of Ce and Co Addition to Fe/Al 2 O 3 for Catalytic Methane Decomposition

机译：Ce和Co对Fe / Al 2 O 3催化甲烷分解的影响

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Catalytic methane decomposition is studied in a fixed bed reactor. Two sets of bimetallic catalysts are employed, namely: 30%Fe- X %Ce/Al 2 O 3 and 30%Fe- X %Co/Al 2 O 3 , and compared with monometallic 30%Fe/Al 2 O 3 catalyst. The effect of promoting Fe with Ce and Co and reduction temperature are investigated. The results reveal that Ce addition has shown a negative impact on H 2 yield while a positive effect on H 2 yield and catalyst stability are observed with Co addition. In terms of number of moles of produced hydrogen per active sites, Fe/Al 2 O 3 has shown a higher number of moles of hydrogen compared to bimetallic catalysts. The catalyst reduced at 500 °C exhibits better activity as compared to the catalyst reduced at 950 °C. Carbon nano-tubes are deposited on the catalyst within the range of 14–73 nm diameter. Two types of carbon nanotubes are detected: Cα and Cγ.
机译：在固定床反应器中研究了催化甲烷的分解。使用两组双金属催化剂，即：30％Fe-X％Ce / Al 2 O 3和30％Fe-X％Co / Al 2 O 3，并与单金属30％Fe / Al 2 O 3催化剂进行比较。研究了铈和钴助铁和还原温度的作用。结果表明，Ce添加对H 2产率显示出负面影响，而Co添加对H 2产率和催化剂稳定性具有正面影响。就每个活性位点产生的氢的摩尔数而言，与双金属催化剂相比，Fe / Al 2 O 3显示出更高的氢摩尔数。与在950℃下还原的催化剂相比，在500℃下还原的催化剂表现出更好的活性。碳纳米管在直径14-73 nm的范围内沉积在催化剂上。检测到两种类型的碳纳米管：Cα和Cγ。

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