Pt/Ferric Hydroxyphosphate: An Effective Catalyst for the Selective Hydrogenation of α,β-Unsaturated Aldehydes (Ketones) into α,β-Unsaturated Alcohols
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Four micro (nano)-sized mesoporous ferric hydroxyphosphates (FHP) are synthesized by a reverse microemulsion-solvothermal method, and then are used as supports to prepare supported Pt catalysts. The mean particle diameter of Pt nanoparticles (NPs) was 4.5–4.6 nm. When the four different Pt/FHP catalysts were used into the hydrogenation of α,β-unsaturated aldehydes (ketones) to their corresponding unsaturated alcohols, Pt/FHP (c) catalyst showed better catalytic performance than the other three partners. Under the optimal experimental conditions, several tested α,β-unsaturated aldehydes could be effectively transformed into corresponding unsaturated alcohols over Pt/FHP (c) catalyst. The catalyst could be recycled and reused several times without activity loss. We propose the stronger interaction between the Pt NPs and ferric ions of the FHP (c) are responsible for its good catalytic performance, and this stronger interaction should be rooted in its enhanced Lewis acid strength.
Keywordsα,β-Unsaturated aldehydes (ketones) Ferric hydroxyphosphates Lewis acid Pt nanoparticles Selective hydrogenation
This work is financially supported by the National Natural Science Foundation of China (21703101, 21303085), the Natural Science Foundation of Jiangsu Province (BK20130901, BK20130930), the Program to Cultivate Outstanding Young Key Teachers of Nanjing Normal University (Qinglan Project), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX17-1087) and the Priority Academic Program Development of Jiangsu Higher Education Institutions. SLS acknowledges the support of the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical, Biological and Geological Sciences under Grant DE-FG02-86ER13622.A000.
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