氧化锌修饰的铁酸铜催化剂水煤气变换性能研究

林性贻; 张勇; 李汝乐; 詹瑛瑛; 陈崇启; 殷玲

氧化锌修饰的铁酸铜催化剂水煤气变换性能研究

福州大学化肥催化剂国家工程研究中心, 福建福州 350002

基金项目: Supported by National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University.

详细信息

通讯作者:
林性贻, linxingyi@fzu.edu.cn

中图分类号: O643.36
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- 文章访问数: 572
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- 被引次数: 0
出版历程
- 收稿日期: 2014-08-07
- 修回日期: 2014-09-16
- 刊出日期: 2014-11-30

Catalytic properties of ZnO-modified copper ferrite catalysts in water-gas shift reaction

National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University, Fuzhou 350002, China

Funds: Supported by National Engineering Research Center of Chemical Fertilizer Catalysts, Fuzhou University.

摘要

摘要: 以250~400 ℃为活性测试温区,研究了氧化锌修饰的铁酸铜催化剂的水煤气变换性能.发现以2.5% ZnO修饰的催化剂表现出较高的催化活性,N₂物理吸附、SEM、XRD、H₂-TPR和CO₂-TPD表征结果表明,适量ZnO的引入不仅能够促使CuFe₂O₄晶相发生转变,而且可以增强催化剂还原性能和增加弱碱性和中强碱性位点数量,同时也可改善铜铁之间的相互作用,从而提高了CuFe₂O₄的催化活性.
- 水煤气变换反应 /
- 铁酸铜催化剂 /
- 氧化锌修饰 /
- 还原性 /
- 碱性位点
Abstract: The catalytic properties of ZnO-modified copper ferrite in water-gas shift (WGS) reaction were evaluated between 250 and 400 ℃. The Zn2.5-Cu/Fe (modified by 2.5% ZnO) showed high catalytic activity. The catalyst was characterized with XRD, SEM, H₂-TPR and CO₂-TPD techniques and N₂ sorption experiment. It was shown that introduction of appropriate amounts of ZnO transformed the CuFe₂O₄ from the tetrahedral crystalline phase to the cubic, enhanced the CuFe₂O₄ reducibility, and increased the amount of weak and medium basic sites. As a consequence, the interaction between copper and iron species was improved and the catalytic activity was increased.
- WGS reaction /
- copper ferrite /
- ZnO modification /
- reducibility /
- basicity

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参考文献(24)

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