采用真空化学镀技术制备了厚度较薄的具有fcc结构的Pd0.9Cu0.1/Al2O3合金复合膜,在250～500℃,160～310kPa的乙醇水汽重整制氢模拟反应条件下,考察了不同醇/水比的H2-Ar-C2H5OH-H2O混合气体系中该膜的透氧性能.结果表明,乙醇和水的存在均相同程度地降低了膜的透氢性能,但测试条件下Pd-Cu合金膜仍保持完整的膜致密性和稳定的相结构.在500℃,310kPa,H2-Ar-C2H5OH-H2O(H2∶Ar∶(C2H5OH+H2O)体积比为60:30:10)混合气中,膜的最大透氢量为11.3m3/(m2·h),H2回收率大于62.5%.Pd-Cu合金膜在乙醇水汽重整制氢反应中具有潜在的应用前景.
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