高校化学工程学报2011，Vol.25Issue(1)：161-167,7.
低温等离子体-催化耦合降解甲苯的研究及机理探讨
Study on Decomposition Mechanism of Toluene by Non-Thermal Plasma Coupled with Catalysis
摘要
Abstract
The non-thermal plasma hybrid technology attracts more and more attention in the field of air pollution control because of its better VOCs(Volatile Organic Compounds) decomposition efficiency and higher energy efficiency. However, the ozone, NOx, halide, etc. are possibly to be formed during the plasma process,and the further decomposition mechanism of the VOCs is lacking by now. In order to find out a suitable technique to remove the gas pollutants with lower energy consumption and higher selectivity, in this study the self-made composite catalysts associated with non-thermal plasma engendered by DBD (Dielectric Barrier Discharge) were used to dispose the flowing polluted air containing toluene vapor at atmosphere pressure. The synergistic effect for toluene removal was evaluated by the removal efficiency, ozone concentration, reactor input energy density and energy efficiency. Based on the GC-MS and FT-IR spectra analysis, the decomposition mechanism and reaction process of toluene decomposition were discussed. The results show that the synergistic technology results in greater enhancements of toluene removal efficiency (about 99％) and energy efficiency (which is 2.3 times higher than that of only using non-thermal plasma technology without catalysts associating).Besides, the synergistic technology inhibits effectively the formation of ozone and other byproducts during the plasma process. Therefore it shows that the technology proposed has a wide application prospect.关键词
低温等离子体/甲苯/催化剂/反应产物/降解机理Key words
non-thermal plasma/ toluene/ catalyst/ reaction product/ decomposition mechanism分类
资源环境引用本文复制引用
竹涛,万艳东,李坚,徐东耀,舒新前,何绪文,梁文俊,金毓峑,方岩..低温等离子体-催化耦合降解甲苯的研究及机理探讨[J].高校化学工程学报,2011,25(1):161-167,7.基金项目
高等学校博士学科点专项科研基金资助项目(20040005009) （20040005009）
中国矿业大学(北京)青年科研基金 （北京）
国家环保部公益性行业科研专项经费项目(201009052-02):中央高校基本科研业务费专项基金(2009QH03) （201009052-02）
国家大学生创新性实验计划(101141309)资助. （101141309）
