Catalytic ozonation of volatile organic compounds(ethyl acetate)at normal temperature  

作　　者：Jiahao Cui Shejiang Liu Hua Xue Xianqin Wang Ziquan Hao Rui Liu Wei Shang Dan Zhao Hui Ding 

机构地区：[1]School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China [2]School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [3]Tianjin Key Laboratory of Indoor Air Environmental Quality Control,School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China

出　　处：《Chinese Journal of Chemical Engineering》2021年第4期159-167,共9页中国化学工程学报（英文版）

基　　金：the National Key R&D Program of the Ministry of Science and Technology,China(Grant No.2018YFC0705304);and the Key Scientific and Technological Support Projects,Tianjin City,China(Grant No.19YFZCSF01090).

摘　　要：Catalytic treatments of VOCs at normal temperature can greatly reduce the cost and temperature of processing,and improve the safety factor in line with the requirements of green chemistry.Activated carbon fiber(ACF)was pretreated with 10%H_(2)SO_(4)by single factor optimization to increase specific surface area and pore volume obviously.The catalytic ozonation performance of ACF loaded with Au,Ag,Pt and Pd noble metals on ethyl acetate was investigated and Pd/ACF was selected as the optimal catalyst which had certain stability.Pd is uniformly distributed on the surface of ACF,and Palladium mainly exists in the form of Pd0 with a amount of Pd+2.The specific surface area of the catalysts gradually decreases as the loading increases.The activation energy of ethyl acetate calculated by Arrhenius equation is 113 kJ mol 1.With 1%Pd loading and the concentration ratio of ozone to ethyl acetate is 3:1,catalytic ozonation performance is maximized and the conversion rate of ethyl acetate reached to 60%in 3050℃Cat 15,00030,000 h^1.

关 键 词：Catalytic ozonation Normal temperature Activated carbon fiber Ethyl acetate Noble metal catalysts 

分 类 号：O643.36[理学—物理化学] X701[理学—化学]