铂负载AlPO-5催化剂的制备及其甘油催化氧化性能研究

doi:10.13218/j.cnki.csdc.2017.08.005

Abstract

Abstract: Aluminum phosphate molecular sieve AlPO-5 was synthesized by hydrothermal method,and then calcined to obtain the porous AlPO-5 supporting material.Pt-loaded AlPO-5 catalyst was prepared by impregnation method and precipitation method,separately,and the catalyst was characterized by powder XRD,TEM and nitrogen adsorption-desorption.Effects of loading method on the dispersion of Pt clusters and particle size were examined;meanwhile,the catalytic performance of Pt/AlPO-5 on glycerol oxidation was studied.Effects of Pt loading,reduction method and reaction time on glycerol conversion and product selectivity were examined in detail.Results show that the catalyst prepared by impregnation method displays a higher conversion and selectivity of glyceraldehyde (up to 63.46%).Glyceraldehyde as a starting reaction product during glycerol oxidation,its high selectivity is closely related to Pt nanoclusters with larger size.

Key words: glycerol, catalytic oxidation, aluminum phosphate molecular sieve, impregnation method

CLC Number:

TQ032

WANG Chao, LIU Lei, DONG Jin-xiang. Preparation of platinum-loaded AlPO-5 catalyst and its catalytic performance for glycerol oxidation[J].China Surfactant Detergent & Cosmetics, 2017, 47(8): 440-445.

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Preparation of platinum-loaded AlPO-5 catalyst and its catalytic performance for glycerol oxidation

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