Recent advances in metal Pt supported heterogeneous catalysts
Homogeneous catalysts suffer from difficult separation and regeneration,which seriously limits its application in industry.To solve these problems,supported Pt heterogeneous catalyst has been prepared by impregnation,co-precipitation and ion exchange.Introducing disparate heterogeneous catalyst supports can change the coordination environment of Pt particles,and thus presents an effective approach to improve the selectivity.Here in the review,the preparations and applications in oxidation,hydrogenation and hydrosilylation of the heterogeneous platinum catalyst supported by inorganic materials(zeolite molecular sieve,carbon nanomaterials,silica and metal oxide)and polymers have been summarized,and the advantages and disadvantages of different supports have been analyzed.The results indicate that the prospective development trends of improving the activity,selectivity and stability of Pt-based heterogeneous catalysts are adjusting preparing process,changing the size and spatial structure of the support,and introducing composite or multiple active centers into support.
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