利用化学镀的方法制备了不同厚度的钯膜,着重研究了乙醇水蒸气重整反应气氛下钯膜的透氢性能.实验结果表明:573～623 K时,乙醇氢气混合气(Et/H2)气氛对钯膜透氢性能的影响大于乙醇水蒸气混合气(Et/H2O)气氛;623～673 K时,Et/H2O气氛对钯膜透氢性能的影响大于Et/H2气氛.当钯膜暴露在H2/N2/Et和H2/N2/Et/H2O气氛下50 min后,透氢量分别能恢复至初始值的96％和89％.此外,乙醇水蒸气重整反应气氛中,较大的水醇摩尔比[(10～13):1]和较薄的钯膜(2～6 μm)有利于抑制钯膜透氢量的下降.
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