摘要
通过溶胶-凝胶法制备PWA/TiO_2/ATTP复合催化剂,利用X射线衍射仪(XRD),扫描电子显微镜(SEM)及氮气吸脱附分析仪对复合催化剂进行了一系列表征。实验研究表明复合催化剂对气相苯具有良好的催化活性。当催化剂中PWA/TiO_2/ATTP的质量比1:5:5,煅烧温度350℃,煅烧时间2 h时,在254 nm紫外照射2 h后苯去除率达到96.3%。同时,矿化实验表明复合催化剂能够将苯和中间产物氧化成二氧化碳。
Phosphotungstic acid（PWA）/Titanium dioxide（TiO2）/Attapulgite（ATTP） composite catalyst was prepared by sol-gel method and comparatively characterized by X-Ray Diffractomer（XRD）, Scanning Electron Microscope（SEM） and Nitrogen Physisorption Analyzer. The experimental results showed that composite catalyst exhibited good photocatalytic activity. When mass ratio of PWA, TiO2 to ATTP was 1：5：5, calcination temperature was 350℃ and calcination time was 2h, the removal efficiency of gaseous benzene was 96.3% with ultraviolet（UV） light wavelength of 254 nm and irradiation time of 2h. Meanwhile, mineralization experiments showed gaseous benzene and intermediate product were oxidized to carbon dioxide by composite catalyst.
出处
《巢湖学院学报》
2016年第3期50-54,共5页
Journal of Chaohu University
关键词
PWA
TIO2
ATTP
复合催化剂
苯
phosphotungstic acid
titanium dioxide
attapulgite
composite catalyst
benzene
