Au/La_2O_3/TiO_2催化甲醇水蒸汽重整制氢  

Catalysis of Reforming Methanol Steam for Generation of Hydrogen over Au/La_2O_3/TiO_2 Catalyst

作　　者：徐新 罗国华[1] 崔冰冰[1] 陈德[2] 

机构地区：[1]北京石油化工学院化工系,北京102617 [2]挪威科技大学

出　　处：《过程工程学报》2007年第3期514-519,共6页The Chinese Journal of Process Engineering

摘　　要：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=3.42h-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.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 productiort of CO and CH4 evidently, and increase the hydrogen selectivity, when the H20/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.

关 键 词：制氢 甲醇水蒸汽重整 Au/La2O3/TiO2负载型催化剂 

分 类 号：O643.3[理学—物理化学]