黑龙江科技大学学报2024，Vol.34Issue(4)：551-556,6.DOI:10.3969/j.issn.2095-7262.2024.04.009
Co-Cu-Mn复合氧化物催化低浓度瓦斯的燃烧性能
Catalytic performance of Co-Cu-Mn composite oxide catalyst for combustion of low concentration gas
摘要
Abstract
This paper is intended to investigate the catalytic performance of Co-Cu-Mn composite ox-ide for combustion of low concentration gas.The study consists of preparing seven kinds of Co-Cu-Mn ter-nary composite oxide catalysts with different molar ratios by coprecipitation method;conducting a low concentration gas catalytic combustion test by using a fixed bed microreactor;and characterizing and eval-uating the catalytic activity of different catalysts according to SEM,BET,XRD,H2-TPR and XPS.The results show that the molar ratio of cobalt,copper and manganese has a significant effect on the activity of Co-Cu-Mn ternary composite oxide catalyst.Due to the more developed pore structure and higher Co3+,Cu2+and Mn3+ratio,the catalyst with a molar ratio of cobalt,copper and manganese of 5:2.5:2.5 forms more oxygen vacancies during the valence transition of Co,Cu and Mn,and shows better catalytic activity for low concentration gas combustion.In addition,the cobalt in the Co-Cu-Mn ternary composite oxide catalyst is the crystal structure of Co3O4 spinel;the manganese species is doped into the crystal lat-tice of Co3O4 spinel during the preparation of the catalyst to form Co-Mn solid solution;and the copper oxide exists on the surface of the catalyst in amorphous or highly dispersed state.关键词
低浓度瓦斯/催化燃烧/复合氧化物/催化剂Key words
low concentration gas/catalytic combustion/composite oxide/catalyst分类
资源环境引用本文复制引用
朱丽华,王之钦,刘培,徐锋..Co-Cu-Mn复合氧化物催化低浓度瓦斯的燃烧性能[J].黑龙江科技大学学报,2024,34(4):551-556,6.基金项目
黑龙江省自然科学基金项目(LH2022E107) （LH2022E107）
黑龙江省省属高等学校基本科研业务费项目(2021-KYYWF-1463) （2021-KYYWF-1463）
