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Efficient Hydrogenation of Benzaldehydes Over Mesopolymer‐Entrapped Pt Nanoparticles in Water
Author(s) -
Li Xiaohong,
Shen Yali,
Song Liying,
Wang Hongna,
Wu Haihong,
Liu Yueming,
Wu Peng
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200800460
Subject(s) - catalysis , selectivity , solvent , nanoparticle , mesoporous material , chemistry , polymer , heterogeneous catalysis , chemical engineering , organic chemistry , materials science , nuclear chemistry , nanotechnology , engineering
Trapped! Mesopolymer‐entrapped Pt nanoparticles serve as an efficient catalyst for the hydrogenation of benzaldehydes in water at ambient temperature. In comparison with the commercial Pt/alumina catalyst, the Pt/FDU‐14 catalyst shows superior performance in the hydrogenation reaction. The catalyst afforded high turnover frequencies and was reusable more than nine times without loss of activity or selectivity.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.