等离子体-催化协同分解H2S机理研究

项目名称： 等离子体-催化协同分解H2S机理研究

项目编号： No.21503279

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 张婧

作者单位： 中国石油化工股份有限公司青岛安全工程研究院

项目金额： 21万元

中文摘要： 等离子体-催化协同分解H2S具有转化率高、分解能耗低的特点，但目前对于二者协同机理的理论研究尚存在欠缺。本项目采用介质阻挡放电进行H2S分解研究，筛选适宜的放电条件，并使用等离子体放电原位制备高分散金属硫化物催化剂，优选具有高效H2S分解效率的等离子体-催化体系。建立基于发射光谱的等离子体原位表征方法，监测H2S放电过程，研究催化剂对H2S放电状态、等离子体活性物种、等离子体区温度分布等方面的影响规律，结合适当的催化剂表征手段，探索等离子体活性物种在催化剂活性中心的吸附和转化过程，提出等离子体和催化剂协同分解H2S的机理。该项目不仅为H2S的资源化利用提供新思路，而且对等离子体与催化剂协同作用的理论研究也具有重要的指导意义。

中文关键词： 硫化氢分解；等离子体；催化剂；协同作用；发射光谱

英文摘要： The decomposition of hydrogen sulfide (H2S) by plasma with the aid of catalyst is known for its high conversion and low energy consumption. However, the mechanism on the synergetic effect between plasma and catalyst remains to be addressed. The dielectric barrier discharge will be employed to decompose H2S, to obtain the appropriate discharge condition. The high-dispersion metal sulfide catalyst will be synthesized by in-situ plasma discharge sulfidation, and the high performance plasma-catalysis system for H2S decomposition will be screened out. The method of in-situ plasma characterization based on optical emission spectrum is to be established to monitor the discharge process of H2S, in order to investigate the effect of the catalyst on the discharge state of H2S, plasma active species, as well as temperature distribution of plasma zone. With appropriate characterization methods, the adsorption and conversion process of plasma active species on the active site of catalyst will be explored, and the mechanism of synergetic effect between plasma and catalyst during the process of H2S decomposition will be proposed. The project does not only provide a new idea to the resource utilization of H2S, but also has important guiding significance to the theoretical research of the synergetic effect between plasma and catalyst.

英文关键词： hydrogen sulfide decomposition ;plasma;catalyst ;synergetic effect ;optical emission spectrum