La、Y改性的CuO-CeO_2催化剂上富氢气体中一氧化碳的选择氧化  

Preferential oxidation of carbon monoxide in excess hydrogen over La、Y modified CuO-CeO_2 catalyst

作　　者：张利峰[1,2] 李金麟[1] 

机构地区：[1]天津渤海职业技术学院,天津300402 [2]天津渤海化工集团科发部,天津300040

出　　处：《天津化工》2009年第2期29-31,共3页Tianjin Chemical Industry

摘　　要：采用沉淀-沉积法制备CuO-CeO2、CuO-Ce1-xLaxO2、CuO-Ce1-xYxO2催化剂。在空速为40000mL·g-·1h-1,常压和模拟燃料电池典型环境的混合气体组成条件下于固定床反应器上考察了CuO-CeO2、CuO-Ce1-xLaxO2、CuO-Ce1-xYxO2反应活性、CO选择性和稳定性,结果表明:CuO-CeO2催化剂中加入La、Y,能提高催化剂的反应活性和CO选择性,并且Y的加入能提高CuO-CeO2催化剂的抗H2O和CO2能力与稳定性。CuO-CeO2,CuO-Ce1-xLaxO2,CuO-Ce1-xYxO2 catalysts were prepared by deposition precipitation method.Their catalytic performance for the preferential oxidation of carbon monoxide in the presence of excess hydrogen simulated proton-exchange membrane fuel cell （PEMFC） feed gas was evaluated and compared under the space velocity 40000 mL·g^-1·h^-1,fixed-bed reactor at atmospheric pressure. CuO-Ce1-xLaxO2,CuO-Ce1-xYxO2 catalysts were found to be better active and CO selective than the CuO-CeO2 catalyst,in addition, CuO-Ce1-xYxO2 catalysts exhibited a good resistance and stability towards CO2 and H2O.

关 键 词：一氧化碳 选择氧化 燃料电池 富氢 

分 类 号：TQ032.4[化学工程]