高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (7): 1551.

• 研究论文 • 上一篇    下一篇

乙醇/水溶剂体系中Pt\|Co/ZrO2催化剂上肉桂醛的选择性加氢性能

孙翠枝,周仁贤   

  1. 浙江大学催化研究所, 杭州 310028
  • 收稿日期:2011-03-08 修回日期:2011-04-19 出版日期:2011-07-10 发布日期:2011-06-02
  • 通讯作者: 周仁贤 E-mail:zhourenxian@zju.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 2057704)资助.

Selective Hydrogenation of Cinnamaldehyde over Pt-Co/ZrO2 Catalyst in the Solvent System of Ethanol/Water

SUN Cui-Zhi, ZHOU Ren-Xian*   

  1. Institute of Catalysis, Zhejiang University, Hangzhou 310028, China
  • Received:2011-03-08 Revised:2011-04-19 Online:2011-07-10 Published:2011-06-02
  • Contact: ZHOU Ren-Xian E-mail:zhourenxian@zju.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 2057704)资助.

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摘要： 研究了乙醇/水溶剂体系中Pt-Co/ZrO2催化剂上肉桂醛的选择性加氢性能，结果发现，在乙醇/水为溶剂的反应体系中，催化剂Pt-0.4wt.%Co/ZrO2具有良好的肉桂醛加氢活性和生成肉桂醇的选择性。载体ZrO2的织构性质对Pt-Co/ZrO2催化剂的活性具有重要影响，具有较大孔径、高比表面的载体有利于活性组分的分散和反应底物的吸附，提高了催化剂的加氢活性。以KBH4为还原剂，由于催化剂中产生Pt-Co-B的协同作用，可显著提高催化剂的加氢活性和肉桂醇的选择性。

关键词: Pt-Co/ZrO2 催化剂, 肉桂醛, 肉桂醇, 选择性加氢

Abstract: The selective hydrogenation of cinnamaldehyde (CMA) to the corresponding cinnamyl alcohol (CMO) was investigated over Pt-Co/ZrO2 catalyst in the solvent system of ethanol/water. Pt-0.4wt.%Co/ZrO2 showed the better catalytic activity for selective hydrogenation of CMA and the higher selectivity to the formation of CMO. The texture of ZrO2 support together with the properties of reducers used in the catalyst preparation, played an important role in the selective hydrogenation of CMA over Pt-Co/ZrO2 catalyst. The support with higher BET surface area and larger pore size was favorable for the dispersion of active phases, as well as the adsorption of reactant molecules, leading to higher catalytic activity. A synergy effect between Pt-Co-B was observed when KBH4 was chosen as the reducer. It significantly promoted the catalytic activity of the catalyst and the selectivity of CMA to CMO.

Key words: Pt-Co/ZrO2 catalyst, Cinnamaldehyde, Cinnamyl alcohol, Selective hydrogenation

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