Study on Plasma Enhanced CH4-CH3OH Conversion to Liquid Chemicals by Nanosecond Pulsed Dielectric Barrier Discharge
Hei Xueting1,2, Gao Yuan2, Dou Liguang2, Li Jiangwei2,3, Chen Genyong1, Shao Tao2,4
1. School of Electrical Engineering Zhengzhou University Zhengzhou 450052 China; 2. Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China; 3. School of Chemistry and Chemical Engineering Shihezi University Shihezi 832003 China; 4. University of Chinese Academy of Sciences Beijing 100049 China
Abstract：The direct one-step conversion of CH3OH with CH4 into value-added liquid chemicals could avoid the problems (harsh reaction conditions, industrial effluent and low atomic economy) that are usually engaged in industrial production. In this paper, CH4 and CH3OH are used to directly synthesize C2-C4 liquid products by nanosecond pulsed dielectric barrier discharge.The effects of Ar dilution, pulse rising and falling time on the electrical characteristics and conversion are investigated, and the reaction mechanism is also discussed.The results show that the main gaseous products are H2, CO, C2H6, C3H8, while the main liquid products are C2H5OH and C3H7OH. Penning ionization induced by Ar dilution is favorable for the liquid formation, which the highest total liquid selectivity is 16.4%.It is found that the larger rising&falling time could enhance the liquid formation with the fixed voltage and frequency. When the rising&falling timeare 500ns, the total liquid selectivity achieves 14.7%.
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2022, Vol. 37 
