催化学报

催化学报 ›› 2013, Vol. 34 ›› Issue (4): 674-678.DOI: 10.1016/S1872-2067(12)60552-X

• 研究快讯 • 上一篇    下一篇

温控聚乙二醇两相体系中纳米钯催化肉桂醛选择性加氢反应

牛明铭, 王艳华, 李文江, 蒋景阳, 金子林   

  1. 大连理工大学精细化工国家重点实验室, 辽宁大连116024
  • 收稿日期:2013-01-31 修回日期:2013-02-19 出版日期:2013-04-23 发布日期:2013-04-24
  • 通讯作者: 王艳华
  • 基金资助:

    国家自然科学基金(21173031);中央高校基本科研业务费专项资金.

Thermoregulated poly(ethylene glycol) biphasic system with Pd nanoparticle catalysts for selective hydrogenation of cinnamaldehyde

NIU Mingming, WANG Yanhua, LI Wenjiang, JIANG Jingyang, JIN Zilin   

  1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2013-01-31 Revised:2013-02-19 Online:2013-04-23 Published:2013-04-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21173031) and the Fundamental Research Funds for the Central Universities.

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被引次数

3

摘要：

将具有“高温混溶、室温分相”功能的聚乙二醇4000(PEG4000)与甲苯-正庚烷组成的两相体系用于纳米钯催化的肉桂醛选择性加氢反应中.在优化的反应条件下,肉桂醛转化率和氢化肉桂醛选择性分别为99%和98%.钯纳米催化剂经简单分相即可与产物分离,且循环使用8次,其活性和选择性基本保持不变.

关键词: 温控聚乙二醇两相体系, 选择性加氢, 钯, 纳米粒子, 肉桂醛

Abstract:

Poly(ethylene glycol) (PEG)-stabilized Pd nanoparticles were prepared by simple hydrogen reduction of PdNa2Cl4?xH2O in the presence of PEG4000 (PEG with an average molecular mass of 4000 g/mol). These were shown to be efficient and recyclable catalysts for the selective hydrogenation of cinnamaldehyde in a thermoregulated PEG biphasic system, which allows for an efficient homogeneous catalytic reaction, easy biphasic separation and catalyst reuse. Under optimized reaction conditions, the conversion of cinnamaldehyde and the selectivity of hydrocinnamaldehyde (HCAL) were 99% and 98%, respectively. The PEG4000-stabilized Pd nanoparticle catalyst could be easily separated from the product by phase separation and reused eight times without evident loss of activity and selectivity.

Key words: Thermoregulated poly(ethylene glycol) biphasic system, Selective hydrogenation, Palladium, Nanoparticle, Cinnamaldehyde