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Controlling carbon monoxide emissions from automobile vehicle exhaust using copper oxide catalysts in a catalytic converter
Materials Today Chemistry ( IF 7.3 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.mtchem.2020.100282
S. Dey , G. Chandra Dhal

Abstract Carbon monoxide (CO) is a very poisonous gas present in the atmosphere. It has significant effects on human beings, animals, plants and the climate. Automobile vehicle exhaust contributes 64% of the CO pollution in urban areas. To control this exhaust pollution, various types of catalysts in catalytic converters have been investigated. Increasing costs of noble metals as a catalyst in automobile vehicles motivates the investigation of material that can be substituted for noble metals. Among the non-noble metals, copper (Cu) is found to be the most capable and highly active catalyst for CO oxidation, compared to precious metal catalysts. Lower cost, easy availability and advance preparation conditions with stabilizers, promoters and so on, make Cu a good choice as an auto exhaust purification catalyst. The oxidation of CO proceeds very quickly over Cu°, followed by Cu+ and Cu2+. The Cu2O catalyst is more active in an O2-rich atmosphere than in O2-lean conditions. The reduced species of copper (Cu0, Cu+) are essential for better CO oxidation but smaller Cu particles could be less active than the higher ones. There is a great deal of research available on the Cu catalyst for CO oxidation, but there is a gap in the literature for a review article individually applied to the Cu catalyst for CO oxidation. To fill this gap, the present review updates information on Cu catalysts in the purification of exhaust gases.

中文翻译:

在催化转化器中使用氧化铜催化剂控制汽车尾气中的一氧化碳排放

摘要 一氧化碳 (CO) 是一种存在于大气中的剧毒气体。它对人类、动物、植物和气候都有显着的影响。汽车尾气占城市地区二氧化碳污染的 64%。为了控制这种废气污染,已经研究了催化转化器中的各种类型的催化剂。贵金属作为汽车催化剂的成本不断增加,促使人们研究可替代贵金属的材料。在非贵金属中,与贵金属催化剂相比,铜 (Cu) 被发现是 CO 氧化能力最强、活性最高的催化剂。较低的成本、易于获得以及具有稳定剂、促进剂等的先进制备条件,使 Cu 作为汽车尾气净化催化剂成为不错的选择。CO 的氧化在 Cu° 上进行得非常快,然后是 Cu+ 和 Cu2+。Cu2O 催化剂在富氧环境中比在贫氧环境中更活跃。铜的还原种类(Cu0、Cu+)对于更好的 CO 氧化至关重要,但较小的 Cu 颗粒可能比较高的颗粒活性较低。有大量关于用于 CO 氧化的 Cu 催化剂的研究,但文献中存在空白,单独应用于用于 CO 氧化的 Cu 催化剂的评论文章。为了填补这一空白,本综述更新了有关废气净化中铜催化剂的信息。Cu+) 对于更好的 CO 氧化是必不可少的,但较小的 Cu 颗粒可能比较高的颗粒活性较低。有大量关于用于 CO 氧化的 Cu 催化剂的研究,但文献中存在空白,单独应用于用于 CO 氧化的 Cu 催化剂的评论文章。为了填补这一空白,本综述更新了有关废气净化中铜催化剂的信息。Cu+) 对于更好的 CO 氧化是必不可少的,但较小的 Cu 颗粒可能比较高的颗粒活性较低。有大量关于用于 CO 氧化的 Cu 催化剂的研究,但文献中存在空白,单独应用于用于 CO 氧化的 Cu 催化剂的评论文章。为了填补这一空白,本综述更新了有关废气净化中铜催化剂的信息。
更新日期:2020-09-01
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