Pd及其含量对Au/CeO_2催化剂甲醇部分氧化制氢性能的影响  

Effects of Pd and its Content on Performance of Au/CeO_2 Catalysts for Partial Oxidation of Methanol

作　　者：陈清波[1] 罗来涛[1] 

机构地区：[1]南昌大学应用化学研究所,江西南昌330031

出　　处：《南昌大学学报（理科版）》2009年第5期460-464,共5页Journal of Nanchang University(Natural Science)

基　　金：高等学校博士点专项科研基金资助项目(20040403001);江西省教育厅科研基金资助项目(GJJ08021)

摘　　要：采用聚乙烯吡咯烷酮(PVP)保护乙醇还原法制备了不同Pd含量的Au-Pd/CeO2催化剂,考察了Pd及其含量对Au/CeO2催化剂甲醇部分氧化制氢反应性能的影响,并运用XRD、TPR、CH3OH-TPD和H2-TPD等技术对催化剂进行了表征。结果表明,Pd的加入提高了Au/CeO2催化剂的活性和氢气选择性,当Au/Pd摩尔比为6:4时催化剂活性和氢气选择性最佳,623 K甲醇的转化率和氢气选择性分别达到99.0%和40.4%。The Au- Pd/CeO2 catalysts with different Pd content were prepared by PVP- stabilized reduction method in C2H5OH. The catalytic properties of the Au -Pd/CeO2 catalysts with different Pd content for partial oxidation of methanol were studied. XRD, TPR, H2 -TPD and CH3 OH -TPD were used to characterize the catalysts. The results showed that the addition of Pd could increase the activity and hydrogen selectivity of Au/CeO2 catalyst for partial oxidation of methanol. When the molar ratio of Au/Pd was 6 ： 4, the activity and hydrogen selectivity of Au - Pd/CeO2 catalyst was the best.

关 键 词：Pd含量 Au-Pd/CeO2催化剂 甲醇部分氧化 制氢 

分 类 号：O643.32[理学—物理化学]