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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (2): 129-133. 上一篇    下一篇

研究论文

草酸钠改性共沉淀制备高效Cu/ZrO2催化剂及其 在甲醇部分氧化制氢反应中的应用

陈宏伟 尹安远 戴维林* 范康年

  

  1. (复旦大学化学系 上海市分子催化和功能材料重点实验室 上海 200433)

  • 投稿日期:2008-04-30 修回日期:2008-07-09 发布日期:2009-01-28
  • 通讯作者: 戴维林

Na2C2O4-Assisted Highly Efficient Cu/ZrO2 Catalyst: Its Preparation and Application to the H2 Generation Process via Partial Oxidation of Methanol

Chen, Hongwei Yin, Anyuan Dai, Weilin* Fan, Kangnian   

  1. (Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry,
    Fudan University, Shanghai 200433, China)
  • Received:2008-04-30 Revised:2008-07-09 Published:2009-01-28
  • Contact: Dai, Weilin

PDF

1766

被引次数

12

采用四种不同沉淀剂并流共沉淀制备系列Cu/ZrO2催化剂, 结果表明经过Na2C2O4和NaOH改性沉淀的催化剂在甲醇部分氧化制氢反应中表现出比NaOH, Na2CO3和Na2C2O4-Na2CO3沉淀的催化剂更优越的催化性能, 在533 K可获得92%的氢气产率而CO含量低于1.5%, 并且在110 h寿命测试中保持良好的稳定性. 采用X射线粉末衍射, N2低温吸附, H2-TPR, N2O滴定和X射线光电子能谱对其进行系统表征, 阐述了该改性共沉淀法所得催化剂高性能的本质原因.

关键词: 甲醇部分氧化, 草酸钠-氢氧化钠, 改性共沉淀, Cu/ZrO2

A series of Cu/ZrO2 catalysts were prepared using four different precipitators by a co-precipitation method. It was found that the Na2C2O4-NaOH precipitator derived catalyst exhibited better catalytic performance than the NaOH, Na2CO3 and Na2C2O4-Na2CO3 derived ones in the H2 generation process via the partial oxidation of methanol. Over this novel catalyst, 92% yield of hydrogen could be obtained at 533 K while the content of CO in the tail gas was less than 1.5%. In addition, the catalyst could exhibit better durability under the 110 h life testing. XRD, BET, H2-TPR, N2O titration and XPS were used to characterize the intrinsic essence of the catalyst obtained from the co-precipitation method by using NaOH and Na2C2O4.

Key words: partial oxidation of methanol (POM), Na2C2O4-NaOH, improved co-precipitation, Cu/ZrO2