个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:女
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:电工理论与新技术. 环境工程. 高电压与绝缘技术
办公地点:静电与特种电源研究所303
联系方式:jiangnan@dlut.edu.cn
电子邮箱:jiangnan@dlut.edu.cn
CO2 conversion in non-thermal plasma and plasma/g-C3N4 catalyst hybrid processes
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论文类型:期刊论文
发表时间:2018-03-07
发表刊物:JOURNAL OF PHYSICS D-APPLIED PHYSICS
收录刊物:SCIE、EI
卷号:51
期号:9
ISSN号:0022-3727
关键字:CO2 conversion; non-thermal plasma; G-C3N4-based catalysts; gas temperature
摘要:Carbon dioxide conversion at atmosphere pressure and low temperature has been studied in a cylindrical dielectric barrier discharge (DBD) reactor. Pure CO2 feed flows to the discharge zone and typical filamentary discharges were obtained in each half-cycle of the applied voltage. The gas temperature increased with discharge time and discharge power, which was found to affect the CO2 decomposition deeply. As the DBD reactor was cooled to ambient temperature, both the conversion of CO2 and the CO yield were enhanced. Especially the energy efficiencies changed slightly with the increase of discharge power and were much higher in cooling condition comparing to those without cooling. At a discharge power of 40 W, the energy efficiency under cooling condition was approximately six times more than that without cooling. Gas flow rate was observed to affect CO2 conversion and 0.1 L min(-1) was obtained as optimum gas flow rate under cooling condition. In addition, the CO2 conversion rate in plasma/g-C3N4 catalyst hybrid system was twice times as that in plasma-alone system. In case of cooling, the existence of g-C3N4 catalyst contributed to a 47% increase of CO2 conversion compared to the sole plasma process. The maximum energy-efficiency with g-C3N4 was 0.26 mmol kJ(-1) at 20 W, which increased by 157% compared to that without g-C3N4. The synergistic effect of DBD plasma with g-C3N4 on pure CO2 conversion was verified.