摘要
以ZSM-5分子筛为载体,采用浸渍法制备了RuCe/ZSM-5催化剂,研究了催化剂在不同Ru负载量、空速、反应温度、甲苯浓度下对甲苯的催化氧化性能,并探讨了催化剂的CO_(2)选择性及稳定性。结果表明:Ru的负载可提升CeO_(2)(20)/ZSM-5催化剂催化甲苯使其降解成高浓度CO_(2)的能力;Ru(1.0)/CZ催化剂表现出优异的低温催化性能、CO_(2)选择性及稳定性,在210℃条件时即可转化90%的甲苯,且CO_(2)选择性达到90%以上。本研究制备的催化剂在较大空速及甲苯浓度范围内对甲苯具有优越的低温催化性能,未来可应用于VOC的工业化处理应用中。
RuCe/ZSM-5 catalysts were prepared by impregnation method with ZSM-5 molecular sieve as support.The catalytic oxidation performances of the catalyst of toluene were studied under different Ru loadings,space velocities,reaction temperatures,toluene concentrations.The CO_(2) selectivity and stability were also discussed.It was indicated that Ru doping could improve the catalytic ability of CeO_(2)(20)/ZSM-5for toluene degradation into high concentration of CO_(2).The Ru(1.0)/CZ catalyst exhibited excellent lowtemperature catalytic performance,CO_(2) selectivity and stability.90% toluence can be converted at 210℃,and the CO_(2) selectivity reached more than 90%.The catalyst prepared in this study showed superior catalytic oxidation performance to toluene at low temperature in a large space velocity and and toluene concentration range,and can be potentially used in processing VOC industrial applications.
作者
郭娜
张金瑶
蒋鹭翔
王登台
王祖武
GUO Na;ZHANG Jinyao;JIANG Luxiang;WANG Dengtai;WANG Zuwu(School of Resource and Environmental Sciences,Wuhan University,Wuhan 430079,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2022年第6期1853-1861,共9页
Chinese Journal of Environmental Engineering
基金
武汉市科技局基础研究项目(2019020702011357)。
