水中介孔聚合物包裹的铂纳米颗粒对苯甲醛的高效氢化反应
Efficient hydrogenation of benzaldehydes over mesopolymer-entrapped Pt nanoparticles in water.
作者信息
Li Xiaohong, Shen Yali, Song Liying, Wang Hongna, Wu Haihong, Liu Yueming, Wu Peng
机构信息
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China.
出版信息
Chem Asian J. 2009 May 4;4(5):699-706. doi: 10.1002/asia.200800460.
Pt nanoparticles entrapped in the matrices of FDU-14 periodic mesoporous organic polymer (abbreviated as mesopolymer), prepared by a simple and facile method, serve as an efficient catalyst for the liquid-phase hydrogenation of benzaldehydes under mild conditions. Water was confirmed to be a better choice of solvent for the hydrogenation of benzaldehydes on the Pt/FDU-14 catalyst. The highest activity (turnover frequency) was about 5700 mol mol(-1) h(-1) for 3-fluorobenzaldehyde hydrogenation in water and no distinct loss of activity or selectivity was observed after the catalyst was recycled nine times. For the para-substituted benzaldehydes, the catalytic performance of Pt/FDU-14 was superior to the commercial Pt/alumina catalyst owing to the more hydrophobic nature of the FDU-based catalyst.
通过简单便捷的方法制备的、包裹在FDU - 14周期性介孔有机聚合物（简称为介聚合物）基质中的铂纳米颗粒，在温和条件下可作为苯甲醛液相氢化反应的高效催化剂。已证实水是在Pt/FDU - 14催化剂上进行苯甲醛氢化反应的更佳溶剂选择。对于在水中进行的3 - 氟苯甲醛氢化反应，最高活性（周转频率）约为5700 mol mol⁻¹ h⁻¹，并且在催化剂循环使用九次后未观察到明显的活性或选择性损失。对于对位取代的苯甲醛，由于基于FDU的催化剂具有更强的疏水性，Pt/FDU - 14的催化性能优于商业Pt/氧化铝催化剂。
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