Efficient hydrogenation of benzaldehydes over mesopolymer-entrapped Pt nanoparticles in water.
Efficient hydrogenation of benzaldehydes over mesopolymer-entrapped Pt nanoparticles in water.
复制标题
DOI：
10.1002/asia.200800460
复制
发表时间：
2009-05
期刊：
影响因子：
--
通讯作者：
Xiaohong Li;Yali Shen;Liying Song;Hongna Wang;Haihong Wu;Yue M. Liu;Peng Wu
中科院分区：
文献类型：
--
作者：
Xiaohong Li;Yali Shen;Liying Song;Hongna Wang;Haihong Wu;Yue M. Liu;Peng Wu
采用一种简便易行的方法制备了负载在FDU-14周期性介孔有机聚合物(简称介孔聚合物)基质中的铂纳米颗粒，在温和的条件下催化苯甲醛的液相加氢反应。确定了水是苯甲醛在铂/FDU-14催化剂上加氢的较佳溶剂。3-氟苯甲醛在水中加氢的最高活性(转换频率)约为5700molmol(-1)h(-1)，催化剂循环使用9次后没有明显的活性和选择性损失。对于对位取代的苯甲醛，由于FDU基催化剂的疏水性较强，其催化性能优于商品铂/氧化铝催化剂。
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.