Preparation and properties of zirconia nanotube-supported 12-tungstophosphoric acid catalyst  

作　　者：Xixin Wang Changyun Lu Liyuan Gong Hongli Hu Xiaojing Yang Jianling Zhao 

机构地区：[1]School of Materials Science and Engineering, Hebei University of Technology

出　　处：《Chinese Chemical Letters》2018年第2期317-320,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 51272064);Key Basic Research Program of Hebei Province of China(No. 17964401D)

摘　　要：Zirconia nanotube-supported H3 PW_（12）O_（40）（HPW） catalysts were obtained by loading HPW onto zirconia nanotube arrays which were prepared through anodization of zirconium foil in the mixture of formamide and glycerol（volume ratio = 1：1） containing 1 wt% NH4 F and 1 wt% H_2 O.The samples were characterized through scanning electron microscope,X-ray diffraction,infrared spectra and thermogravimetric analysis. Various factors affecting the catalytic activities have been investigated. The catalysts, prepared through pretreating the nanotube carrier at 400 ＇C, followed by loading with 35 wt% HPW and calcining at 200 ℃, possess high catalytic activities in the synthesis of fatty acid ethyl ester. Under the optimal reaction conditions, the conversion percentages of lauric acid, oleic acid and stearic acid are all higher than 98.5%.Zirconia nanotube-supported H3 PW_（12）O_（40）（HPW） catalysts were obtained by loading HPW onto zirconia nanotube arrays which were prepared through anodization of zirconium foil in the mixture of formamide and glycerol（volume ratio = 1：1） containing 1 wt% NH4 F and 1 wt% H_2 O.The samples were characterized through scanning electron microscope,X-ray diffraction,infrared spectra and thermogravimetric analysis. Various factors affecting the catalytic activities have been investigated. The catalysts, prepared through pretreating the nanotube carrier at 400 ＇C, followed by loading with 35 wt% HPW and calcining at 200 ℃, possess high catalytic activities in the synthesis of fatty acid ethyl ester. Under the optimal reaction conditions, the conversion percentages of lauric acid, oleic acid and stearic acid are all higher than 98.5%.

关 键 词：Zirconia Nanotube arrays Catalyst Tungstophosphoric acid Esterification 

分 类 号：TE667[石油与天然气工程—油气加工工程] TQ426[化学工程]