应用化学 ›› 2011, Vol. 28 ›› Issue (12): 1397-1401.DOI: 10.3724/SP.J.1095.2011.00638

• 研究论文 • 上一篇    下一篇

担载Na对Cu-ZnO/SiO2催化剂结构及催化仲丁醇脱氢反应活性的影响

马隽,朱娜*   

  1. (吉林省环境监测中心站 长春 130011)
  • 收稿日期:2010-10-25 修回日期:2011-04-07 出版日期:2011-12-10 发布日期:2011-12-10
  • 通讯作者: 朱娜,工程师; Tel/Fax:0431-87680774; E-mail:zhuna1981@yahoo.cn; 研究方向:环境与化学

Effects of Loaded Sodium on the Structure of Cu-ZnO/Na-SiO2 Catalysts and the Dehydrogenation of 2-Butanol

MA Jun, ZHU Na*   

  1. (Center Station of Supervise Environment of Jilin Province,Changchun 130011)
  • Received:2010-10-25 Revised:2011-04-07 Published:2011-12-10 Online:2011-12-10
  • Contact: majun

摘要:

采用金属Na对SiO2进行预处理,之后用浸渍法制备Cu-ZnO/Na-SiO2催化剂。 研究了Na的加入方式和含量对催化剂的结构和性能的影响,采用XRD和TPR等测试技术对催化剂进行表征。 结果表明,与未经Na预处理SiO2制备的Cu-ZnO-Na/SiO2催化剂对比,Na的加入提高了Cu物种的分散度,并增强了Cu物种与载体的相互作用。 通过调节Na的加入量可获得性能较佳的仲丁醇脱氢催化剂。

关键词: 碱金属, Cu-ZnO/ SiO2(Na)催化剂, 仲丁醇, 脱氢

Abstract:

The catalyst support SiO2 was firstly pretreated with different amounts of sodium nitrate solution followed by impregnation in copper and zinc nitrates solution. The effects of the preparation method and contents of sodium on the structures and performances of Cu-ZnO/Na-SiO2 catalysts have been investigated. The catalytic activities of these catalysts were evaluated using the dehydrogenation of 2-butanol and the selectivity for MEK as probes. These catalysts were characterized by means of XRD and TPR. The results indicated that sodium-pretreatment can improve the dispersion of metallic copper and the interaction between the copper species and the support.

Key words: Alkali metal Na, Cu-ZnO/ SiO2(Na) Catalysts, 2-butanol, Dehydrogenation

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