Abstract: The experimental evidences of the intermediates existed in ethanol steam reforming reaction are summarized. The relevant mechanism discussions from the literature are introduced in detail. The possible reaction paths in the process of hydrogen production from ethanol steam reforming are generalized. That catalyst constitution, crystal lattice structure, surface acid and alkaline，redox property have significant influences on reaction mechanisms and that ratio of water than ethanol, temperature, pressure and other reaction conditions have effects on products selectivity and equilibrium concentration are pointed out. The research trends of quantifying surface property and crystal structure parameters to deeply studying reaction mechanism are prospected.

Key words: ethanol, hydrogen production, reforming, reaction mechanism

摘要： 总结了乙醇水蒸气重整反应研究中给出的有关反应中间体存在的实验证据，就文献中有关机理的讨论作了较为详细的介绍，综述了乙醇水蒸气重整制氢过程中可能存在的反应路径。指出催化剂的组成、晶格结构、表面酸碱性、氧化还原性等因素对催化反应机理有显著影响，原料水醇比、温度、压力等反应工艺条件也会影响反应产物的选择性和平衡浓度。指出量化计算催化剂表面性质和晶格结构参数，深入研究催化反应机理，是乙醇水蒸气重整制氢的研究趋势。

关键词: 乙醇, 制氢, 重整, 反应机理