甲烷裂解制氢技术具有工艺流程简单、无温室气体排放、氢气和积碳易分离等优势。综述了反应器类型和催化剂种类对甲烷裂解制氢特性的影响，总结了甲烷裂解制氢反应机理和热力学特性。铁基催化剂具有成本低及环境友好等特点，在700-900 ℃展现出较高的催化甲烷裂解性能，介绍了铁基催化剂甲烷裂解制氢特性。探讨了载体和掺杂改性对铁基催化剂性能的影响。Al2O3和ZrO2等具有良好的热稳定性适合作为铁基催化剂载体；经Ni、Co、Mo、Ce等掺杂改性的铁基催化剂表现出更高活性，甲烷转化率能提高10-30%。甲烷裂解制氢还面临催化剂失活和能耗高等问题，因此解决铁基催化剂再生和低碳供能等问题有望推进甲烷裂解制氢的工业应用。

The technology of hydrogen production through methane decomposition has the advantages of the simple process flow, no greenhouse gas emissions, and easy separation of hydrogen and carbon deposits. The influence of reactor types and catalyst types on the characteristics of hydrogen production from methane decomposition was reviewed, and the reaction mechanism and thermodynamic characteristics of hydrogen production from methane decomposition were summarized. Iron-based catalysts have the characteristics of low cost and environmental friendliness. They exhibit high catalytic performance for methane decomposition at 700-900 ℃. The characteristics of hydrogen production from methane decomposition using iron-based catalysts are introduced. The influence of carrier and doping modification on the performance of iron-based catalysts was discussed. Al2O3 and ZrO2, etc. have good thermal stability and are suitable as iron-based catalyst supports. Iron-based catalysts modified by doping with Ni, Co, Mo, Ce, etc. exhibit higher activity, and the methane conversion can be increased by 10-30%. Hydrogen production from methane decomposition still faces problems such as catalyst deactivation and high energy consumption. Therefore, solving issues like the regeneration of iron-based catalysts and low-carbon energy supply is expected to promote the industrial application of hydrogen production from methane decomposition.

TK05

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