高校化学工程学报2026，Vol.40Issue(2)：232-240,9.DOI:10.3969/j.issn.1003-9015.2025.00.036
Co3O4催化剂催化低浓度甲烷燃烧性能
Performance of low-concentration methane combustion catalyzed by Co3O4
摘要
Abstract
To explore a facile and eco-friendly synthesis route for Co3O4,the Co3O4 catalysts were synthesized by the solid-phase method using cobalt acetate and oxalic acid as precursors,and its catalytic performance for the combustion of low-concentration methane was evaluated.The catalysts were characterized by X-ray diffraction(XRD),H2 temperature-programmed reduction(H2-TPR),N2 physisorption,and scanning electron microscopy(SEM).The activity and reaction kinetics of Co3O4 in catalytic methane combustion were subsequently investigated.The results revealed that the optimal synthesis conditions included a cobalt acetate-to-oxalic acid molar ratio of 1:3,calcination at 400℃for 4 h,and grinding for 10 min.The obtained catalyst exhibited a pure Co3O4 phase,with surface Co3+species identified as critical active sites for enhancing catalytic performance.Under a gas hourly space velocity(GHSV)of 467 mL·gcat-1·min-1,the temperatures corresponding to 50%(T50)and 90%(T90)methane conversion were 367℃and 437℃,respectively.The apparent activation energy(Eₐ)was determined to be 99.67 kJ·mol-1.This study offers a practical strategy for optimizing Co3O4-based catalysts and advancing the utilization of low-concentration methane sources,particularly coal mine ventilation air methane(VAM).关键词
Co3O4/低浓度甲烷/催化燃烧/固相法Key words
Co3O4/low-concentration methane/catalytic combustion/solid-state reaction分类
资源环境引用本文复制引用
朱丽华,王凯旋,张悦,徐锋..Co3O4催化剂催化低浓度甲烷燃烧性能[J].高校化学工程学报,2026,40(2):232-240,9.基金项目
黑龙江省自然科学基金(LH2022E107). （LH2022E107）
