中文摘要：

采用原位合成法在γ-Al2O3表面合成了锌铝水滑石,再采用顺次浸渍法制备了Ce/Cu/Zn-Al催化材料;将其应用于甲醇水蒸气重整制氢,探讨了Ce含量对Cu/Zn-Al催化剂催化性能的影响.催化剂表征结果表明,CeO_2的引入改善了活性组分铜的分散度、铜的比表面积以及催化剂的氧化还原性质,进而提高了催化剂的催化活性和产氢率.当Ce含量为4%时,催化剂活性最佳,在250℃时,甲醇转化率达到100%,CO摩尔分数为0.39%,与Cu/Zn-Al催化剂相比,甲醇转化率提高了近40%.

英文摘要：

Zn Al-LDHs was synthesized on γ-Al2O3 by in situ synthesis method. Moreover,the Ce/Cu/Zn-Al catalysts were prepared by ordinal wet impregnation method and applied to methanol steam reforming. The effect of cerium content on Cu/Zn-Al catalysts was discussed for methanol steam reforming. The catalysts were studied by XRD,SEM,H2-TPR,N2 adsorption techniques and chemisorption N2 O. The results showed that the addition of CeO_2 improved the copper dispersion,copper surface area and catalyst reducibility. The catalytic activity and hydrogen production rate was also promoted thereby. When the Ce content was 4%,the catalyst exhibited the best catalytic activity,that was,the methanol conversion was 100% and the molar fraction of CO was 0. 39% at 250 ℃ in hydrogen production by methanol steam reforming. Compared to the Cu/Zn Al catalyst,the methanol conversion increased by almost 40%.