Ni-Fe／Al2O3催化剂催化乙醇水蒸气重整制氢研究  

Hydrogen production from ethanol steam reforming over Ni-Fe/Al_2O_3 catalyst

作　　者：毛丽萍[1,2] 吕功煊[1] 

机构地区：[1]中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室,甘肃兰州730000 [2]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《应用化工》2009年第3期316-320,共5页Applied Chemical Industry

基　　金：国家973项目(2007CB613305)

摘　　要：利用浸渍法制备了不同组成的Ni-Fe/Al2O3催化剂,对催化剂进行了X射线衍射(XRD)表征。以乙醇水蒸气重整(SRE)反应为探针,采用固定床反应器考察了催化剂组成、反应温度对活性和选择性的影响。实验结果表明,Ni-Fe/Al2O3较Ni,Fe单独担载的Ni/Al2O3,Fe/Al2O3选择性高,低温活性好,Ni是主要活性组分,Ni,Fe配比影响活性和选择性,其中Ni10Fe5性能最佳。400℃时,乙醇转化率可达100%,H2,CO和CO2选择性分别55.4%,0.86%和82.18%;450℃时,乙醇转化率为100%,H2,CO和CO2选择性分别67.18%,4.30%和91.01%,且反应温度影响SRE反应系统中各相关反应在系统中的权重。Ni-Fe/Al2O3 Catalysts with various compositions were prepared by impregnation method,and the catalysts were characterized by XRD. By applying the ethanol steam reforming reacuon as a probe, the effects of catalyst composition and reaction temperature on the activity and selectivity were investigated in a fixed-bed reactor. It was found that the Ni-Fe/Al2O3 exhibited higher selectivity and better low-temperature activity than Ni/Al2O3 and Fe/Al2O3, Ni is the main active component, the conversion and selectivity were affected by the ratio of Ni and Fe,the Ni10Fe5 showed optimum catalytic performance, the conversion of ethanol, selectivity of H2 , CO, CO2 reached 100% , 55.4% , 0.86% and 82.18% at 400 ℃, respectively; the conversion of ethanol, selectivity of H2, CO, CO2 reached 100% , 67.18 % , 4.30 % and 91.01% at 450 ℃, respectively, and the contribution of relevant reactions in SRE system were strongly influenced by the temperature.

关 键 词：Ni-Fe/Al2O3 乙醇 水蒸气重整 制氢 浸渍法 

分 类 号：O643.32[理学—物理化学]