This paper seeks to improve the catalytic performance of copper-based catalyst for combustion of ventilation air methane. The study consists of preparing the CuO/ZrO2 catalyst by the conventional impregnation method; preparing the CuO/ZrO2-P catalyst,a copper-based catalyst modified by means of low temperature plasma enhancement method; evaluating the activities of the CuO/ZrO2 and CuO/ZrO2-P catalysts for the combustion of ventilation air methane; and characterizing CuO/ZrO2 and CuO/ZrO2-P by SEM, BET, XRD, XPS and investigating the effect of low temperature plasma modification on the structure and catalytic performance. The results demonstrate that the CuO/ZrO2-P has a higher activity than CuO/ZrO2; the low temperature plasma modification is more propitious than the conventional impregnation to get a catalyst with a higher specific surface area; the low temperature plasma modification may promote the formation of active Cu species on the catalyst surface and improve the dispersion of active Cu species, all of which contribute to enhancing the activity of CuO/ZrO2-P catalyst and depressing the apparent activation energy of catalytic combustion reaction of ventilation air methane.%为改善铜基催化剂催化乏风瓦斯燃烧的性能,采用普通浸渍法和低温等离子体改性的方法分别制备了CuO/ZrO2和CuO/ZrO2-P催化剂,利用SEM、BET、XRD、XPS技术对催化剂进行表征,研究等离子体改性作用对催化剂结构和性能的影响.结果表明,CuO/ZrO2-P催化乏风瓦斯燃烧的活性较CuO/ZrO2高.等离子体的改性作用在于增大了催化剂的比表面积,使催化剂的活性组分向表面富集,改善了活性组分的分散性.这使得催化剂的活性得以提高、乏风瓦斯催化燃烧的表观活化能得以降低.
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