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

日用化学工业 ›› 2017, Vol. 47 ›› Issue (8): 440-445.doi: 10.13218/j.cnki.csdc.2017.08.005

铂负载AlPO-5催化剂的制备及其甘油催化氧化性能研究

王超, 刘雷, 董晋湘

太原理工大学化学化工学院,山西太原 030024

收稿日期:2017-04-07 出版日期:2017-08-22 发布日期:2019-03-20
通讯作者: 刘雷,教授,E-mail:liulei@tyut.edu.cn。
作者简介:王超(1988-),男,硕士研究生,电话:15735161079。
基金资助:
国家优秀青年科学基金资助项目(21322608);全国优秀博士学位论文作者专项资金资助项目(201350);山西省青年拔尖人才支持计划资助项目(2013002)

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

WANG Chao, LIU Lei, DONG Jin-xiang

College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China

Received:2017-04-07 Online:2017-08-22 Published:2019-03-20

摘要/Abstract

摘要： 采用水热合成法制备磷酸铝分子筛AlPO-5,并通过焙烧处理得到AlPO-5分子筛多孔材料,以浸渍法和沉淀法分别制备了Pt负载型AlPO-5催化剂,通过粉末XRD、TEM、氮气吸附-脱附等手段对制备的催化剂进行了对比表征,研究了负载方法对Pt团簇分散度以及粒径尺寸的影响。以Pt/AlPO-5作为催化剂,研究了其对甘油的催化氧化性能,系统考察了Pt负载量、还原方法和反应时间对甘油转化率和产物选择性的影响。实验结果表明,由浸渍法制备的催化剂对甘油的转化率和甘油醛的选择性较高,甘油醛的选择性最高可达到63.46%。甘油醛作为起始反应产物,其高选择性与较大尺寸的Pt纳米团簇有关。

关键词: 甘油, 催化氧化, 磷酸铝分子筛, 浸渍法

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

中图分类号:

TQ032

王超, 刘雷, 董晋湘. 铂负载AlPO-5催化剂的制备及其甘油催化氧化性能研究[J]. 日用化学工业, 2017, 47(8): 440-445.

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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铂负载AlPO-5催化剂的制备及其甘油催化氧化性能研究

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

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