纳秒脉冲介质阻挡放电等离子体驱动CH_(4)-CH_(3)OH转化制备液态化学品的特性研究  

Study on Plasma Enhanced CH_(4)-CH_(3)OH Conversion to Liquid Chemicals by Nanosecond Pulsed Dielectric Barrier Discharge

作　　者：黑雪婷 高远[2] 窦立广 李江伟 陈根永[1] 邵涛[2,4] Hei Xueting;Gao Yuan;Dou Liguang;Li Jiangwei;Chen Genyong;Shao Tao(School of Electrical Engineering Zhengzhou University,Zhengzhou 450052 China;Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion Institute of Electrical Engineering Chinese Academy of Sciences,Beijing 100190 China;School of Chemistry and Chemical Engineering Shihezi University,Shihezi 832003 China;University of Chinese Academy of Sciences,Beijing 100049 China)

机构地区：[1]郑州大学电气工程学院,郑州450052 [2]中国科学院电工研究所等离子体科学和能源转化北京市国际科技合作基地,北京100190 [3]石河子大学化学化工学院,石河子832003 [4]中国科学院大学,北京100049

出　　处：《电工技术学报》2022年第15期3941-3950,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51925703,51637010,51807190,21908219)。

摘　　要：开发非合成气路线的 CH-CHOH 直接制取高碳液态化学品转化技术可有效规避传统工业中面临的高危反应条件、废水排放、原子经济性低等问题。该文以 CH、CHOH 为原料,采用纳秒脉冲放电等离子体驱动 CH-CHOH 直接合成 C-C液态产品,主要探究了 Ar 添加和脉冲上升沿、下降沿对 CH-CHOH 放电中电学特性和转化特性的影响,并进行机理探究。实验结果表明,CH-CHOH-HO 体系实验的主要气态产品为 H、CO、CH和 CH,主要液态产品为 CHOH、CHOH。总流速固定时,Ar 添加后产生的彭宁电离有利于液态产品的生成,总液体选择性最高为 16.4%;在电压和频率固定时,变化六种不同的上升沿、下降沿条件,发现较大的上升沿、下降沿有利于液态产品的生成,当上升沿、下降沿为 500ns 时,总液体选择性为 14.7%。The direct one-step conversion of CHOH with CHinto 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, CHand CHOH are used to directly synthesize C-Cliquid 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 H,CO, CH, CH, while the main liquid products are CHOH and CHOH. 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%.

关 键 词：纳秒脉冲 介质阻挡放电 甲烷转化 等离子体化学 

分 类 号：O461[理学—电子物理学] O461.25[理学—物理] O646.9