个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:电气工程学院
学科:环境工程. 电工理论与新技术. 高电压与绝缘技术
办公地点:大连理工大学电气工程学院静电所
Post Plasma-Catalysis of Low Concentration VOC Over Alumina-Supported Silver Catalysts in a Surface/Packed-Bed Hybrid Discharge Reactor
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论文类型:期刊论文
发表时间:2017-03-01
发表刊物:WATER AIR AND SOIL POLLUTION
收录刊物:SCIE、EI
卷号:228
期号:3
ISSN号:0049-6979
关键字:Non-thermal plasma; VOCs; Plasma-catalysis process; DBD plasma
摘要:In this study, the degradation of benzene by the means of an optimized surface/packed-bed hybrid discharge (SPBHD) plasma combined with gamma-Al2O3-supported MOx (M = Ag, Mn, Cu, or Fe) catalysts in post plasma-catalysis (PPC) system. The effects of Ag loading amount and gas hourly space velocity (GHSV) for plasma-catalysis degradation of benzene have been systematically investigated. The experimental result showed that the benzene degradation was improved and the mineralization process was greatly enhanced towards total oxidation after the combination of plasma with all MOx/gamma-Al2O3 catalysts. The AgOx/gamma-Al2O3 catalyst exhibited the best catalytic activity in benzene degradation than the other catalysts in PPC system. The highest benzene degradation efficiency of 96% and COx selectivity of 99% can be obtained for AgOx/gamma-Al2O3 catalyst with optimum Ag loading amount and GHSV of 15% and 22,856 h(-1), respectively. Time course of benzene degradation during PPC process indicated that the plasma-induced catalytic activity of AgOx/gamma-Al2O3 catalyst was temporary rather than lasting over a period after the plasma off. FT-IR analysis results revealed that the intermediate products (such as CO, HCOOH) and unwanted by-products (O-3 and NOx) generated in plasma process could be significantly inhibited by PPC process with AgOx/gamma-Al2O3 catalyst.