摘要
质子交换膜燃料电池的燃料价格低、无化学危险、无污染,是目前其它所有动力来源无法做到的。但是利用传统工艺获取的氢中约含1%的CO,易使燃料电池的Pt催化剂“中毒”。选择性氧化法可有效脱除富氢气体中的CO,使CO含量降低。钙钛矿型复合氧化物因其独特的物理化学性质,表现出良好的CO选择性氧化活性,成为该领域的研究热点。采用共沉淀-浸渍法制备CuO/LaMnO_(3)催化剂,用于富氢气中CO的优先氧化。考察焙烧温度对性能的影响,并利用XRD、TPR等手段分析催化剂的结构。
Proton exchange membrane fuel cells have low fuel price,no chemical danger and no pollution,which is impossible to achieve by all other power sources at present.However,the hydrogen obtained by the traditional process contains about 1%CO,which is easy to“poison”the Pt catalyst of fuel cells.The selective oxidation method can effectively remove CO in hydrogen-rich gas and reduce the CO content.Perovskite-type composite oxides show good selective oxidation activity of CO due to their unique physical and chemical properties,which has become a research hotspot in this field.CuO/LaMnO_(3) catalyst was prepared by coprecipitation-impregnation method for the preferential oxidation of CO in hydrogen rich environment.The effect of calcination temperature on the properties of the catalyst was investigated,and the structure of the catalyst was analyzed by XRD and TPR.
作者
邬坤
李文君
WU Kun;LI Wenjun(Shanxi ALEX Environmental Protection Technology Co.,Ltd.,Taiyuan 030600,Shanxi,China;Shanxi Yaneng Safety Medical Technology Co.,Ltd.,Taiyuan 030032,Shanxi,China)
出处
《工业催化》
2024年第12期53-57,共5页
Industrial Catalysis
