钙钛矿催化剂催化低浓度甲烷燃烧研究进展  

Research progress in methane combustion catalyzed by perovskite catalysts

作　　者：竹涛[1,2] 王美丹 苑博 张学里 张馨月 黄钰欢 李辰 徐旭东 孙倩 ZHU Tao;WANG Meidan;YUAN Bo;ZHANG Xueli;ZHANG Xinyue;HUANG Yuhuan;LI Chen;XU Xudong;SUN Qian(School of Chemical and Environmental Engineering,China University of Mining&Technology-Beijing,Beijing 100083,China;State Key Laboratory Cultivation Base for Gas Geology and Gas Control(Henan Polytechnic University),Jiaozuo 454000,China;Shanxi Gemeng Sino US Clean Energy R&D Center Co.,Ltd.,Taiyuan 030000,China)

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083 [2]河南省瓦斯地质与瓦斯治理重点实验室—省部共建国家重点实验室培育基地,河南焦作454000 [3]山西格盟中美清洁能源研发中心有限公司,山西太原030000

出　　处：《洁净煤技术》2025年第2期63-79,共17页Clean Coal Technology

基　　金：中央引导地方科技发展资金资助项目(YDZJSX20231A069);河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地开放基金资助项目(WS2022B10)。

摘　　要：煤矿瓦斯是煤矿的伴生气,主要成分是甲烷,大量排放到大气中引起了全球气候变暖等生态问题,因此煤矿乏风瓦斯的减排对于达成双碳目标至关重要。催化燃烧法是一种很有前途的甲烷减排的方法,其关键在于开发低成本、高催化活性的催化剂。近年来,钙钛矿氧化物由于成分灵活、结构特殊、较低的成本以及催化性能的可调控性等优点在甲烷催化燃烧领域受到极大的关注。在钙钛矿催化剂处理低浓度甲烷的工业应用中,存在催化性能低和硫中毒等问题,阻碍了钙钛矿氧化物催化甲烷燃烧体系的进一步发展。介绍了钙钛矿催化剂的可调控结构和合成方法,归纳了钙钛矿催化剂上的甲烷催化燃烧机理,分析了硫的存在导致钙钛矿失活的原因,重点阐述了钙钛矿催化剂提高催化活性以及耐硫性能的设计方法。分析发现:通过优化制备条件、进行元素掺杂、酸性溶液处理、构建多孔新型钙钛矿等方法的应用,可使钙钛矿的表面活性位点与氧空位的数量增加,同时提高活性组分在催化剂表面的分散程度,进而提高催化活性。最后对钙钛矿催化剂催化甲烷燃烧未来设计方向进行了展望。Coal mine ventilation air methane is the associated gas of coal mine,and the main component is methane.A large amount of coal mine ventilation air methane released into the atmosphere has caused ecological problems such as global warming.Therefore,the emission reduction of the ventilation air methane is crucial to achieving the“Double Carbon”target.Catalytic combustion is a promising method for emission reduction of methane,the key lies in the development of low cost and high catalytic activity catalysts.In recent years,perovskite oxides have attracted great attention in the field of methane catalytic combustion due to the advantages of flexible composition,special structure,low cost and regulation of catalytic performance.In the industrial application of perovskite catalyst for low concentration methane,there are problems such as low catalytic performance and sulfur poisoning,which hinder the further development of perovskite oxide catalytic methane combustion system.The regulative structure and synthesis method of perovskite catalyst were introduced,the mechanism of methane catalytic combustion on perovskite catalyst was summarized,the reason of perovskite inactivation caused by the presence of sulfur was analyzed,and the design method of perovskite catalyst to improve catalytic activity and sulfur resistance was emphasized.It was found that by optimizing preparation conditions,element doping,acid solution treatment,and constructing porous new perovskite,the number of surface active sites and oxygen vacancies of perovskite can be increased,meanwhile,the dispersion degree of active components on the catalyst surface can be increased,thus improving the catalytic activity.Finally,the future design direction of methane combustion catalyzed by perovskite catalyst is prospected.

关 键 词：甲烷催化燃烧 钙钛矿 煤矿乏风瓦斯 催化活性 氧化物 硫化物 

分 类 号：TQ426[化学工程] O643.36[理学—物理化学]