CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3)催化剂与等离子体联合转化甲烷的实验研究  

Experimental study on methane conversion under synergism plasma with CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3)catalyst

作　　者：徐锋 张萍 田瑶瑶 朱丽华 Xu Feng;Zhang Ping;Tian Yaoyao;Zhu Lihua(School of Safety Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学安全工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2022年第5期618-623,共6页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51874126)。

摘　　要：为研究催化剂与等离子体联合作用下CH_(4)转化反应的特性,开展了CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3)催化剂辅助等离子体转化CH_(4)的实验,通过BET、SEM和XPS表征催化剂的结构特征,分析催化剂中CuO与ZnO物质的量比和CeO_(2)对反应的影响。结果表明,等离子体与CuO-ZnO/γ-Al_(2)O_(3)或CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3)协同转化CH_(4)的主要产物为CO、CO_(2)、CH_(3)OH和H_(2),以及C_(2)H_(4)、C_(2)H_(6)等C_(2)烃。在一定实验条件下,CH_(4)部分氧化反应同时受催化剂比表面积、孔结构及活性组分分散性的影响,但活性组分的分散性对CH_(4)氧化影响更显著,而CeO_(2)通过促进Zn活性组分在载体表面的分散,显著提升H_(2)和C_(2)烃的产率。This paper aims to study the characteristics of methane conversion reaction under the combined action of catalyst and plasma.The research involves performing the experiment of plasma conversion to CH_(4)with CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3)catalyst,characterizing catalyst structure by BET,SEM and XPS,and analyzing the ratio of CuO to ZnO in the catalyst and the effect of CeO_(2)on the reaction.The results show that CO,CO_(2),CH_(3)OH and H_(2),and C_(2)hydrocarbons such as C_(2)H_(4)and C_(2)H_(6)are the main products of CH_(4) performed by the synergistic conversion of plasma and CuO-ZnO/γ-Al_(2)O_(3)or CeO_(2)-CuO-ZnO/γ-Al_(2)O_(3).Under certain experimental conditions,the partial oxidation of CH_(4)is affected by the specific surface area,pore structure of the catalyst and the dispersion of active components.However,the dispersion of active components has positive effect on CH_(4)oxidation.Further,CeO_(2)can significantly increase the yields of H_(2)and C_(2)hydrocarbons by promoting the dispersion of Zn active components on the carrier surface.

关 键 词：甲烷 低温等离子体 介质阻挡放电 催化剂 

分 类 号：TD712[矿业工程—矿井通风与安全] TQ223.1[化学工程—有机化工]