Au/La2O3/TiO2催化甲醇水蒸汽重整制氢

用沉积-沉淀法制备了Au/La2O3/TiO2催化剂，考察了制备条件和反应条件对催化剂活性的影响，并利用X射线衍射(XRD)、透射电子显微镜(TEM)等测试手段对催化剂进行了表征. 结果表明La2O3的加入可使催化剂催化甲醇水重整的催化活性明显提高，且明显降低产物气体中CO和CH4的含量，使氢气选择性明显增加. 当nH2O/nCH3OH=1.0、液体进料空速WHSV=3.42 h-1、反应温度为275℃时，Au/La2O3/TiO2催化剂催化甲醇水蒸汽重整制氢反应的效果最佳.

Catalysis of Reforming Methanol Steam for Generation of Hydrogen over Au/La2O3/TiO2 Catalyst

Au/La2O3/TiO2 catalyst was prepared by the deposition-precipitation method and characterized by XRD and TEM. The influences of the preparation conditions and reaction conditions were investigated in details. The results show that La2O3 can enhance the catalytic activity of methanol steam reforming, and the addition of La2O3 can decrease the production of CO and CH4 evidently, and increase the hydrogen selectivity, when the H2O/CH3OH molar ratio is 1.0, WHSV reaches to 3.42 h-1 and reaction temperature is at 275℃, the production of hydrogen via steam reforming of methanol over Au/La2O3/TiO2 shows the optimal performance.