关键词: 低浓度甲烷, 催化燃烧, 催化剂

Abstract: Methane is a strong greenhouse gas with a short life span and rapid warming effect. Coal mining, which mainly consists of underground mining, makes coal mine methane become the main source of methane emission from energy activities in China. However, there is still no efficient method to utilize low-concentration methane. Catalytic combustion of methane can completely convert methane to carbon dioxide at a lower temperature, which is an efficient and environmentally friendly utilization method to use methane. Methane molecules have high structural stability, especially the catalytic combustion of low-concentration methane under mild conditions is more challenging. In this paper, based on the industrial application perspective, focusing on the requirements of actual working conditions for catalysts, the research progress in four aspects of catalyst activity, thermal stability, mechanical stability and anti-toxicity stability was overviewed, and the challenges in the application of methane-catalytic combustion catalysts and future development trend were analyzed. The purpose of this paper is to provide a reference for the development of catalytic combustion catalysts of ventilation air methane in coal mines for industrial applications.

Key words: low-concentration methane, catalytic combustion, catalyst