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Property and structure of various platinum catalysts for low-temperature carbon monoxide oxidations
Materials Today Chemistry ( IF 6.7 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.mtchem.2019.100228
S. Dey , G.C. Dhal

Abstract The oxidation of carbon monoxide (CO) has received more attention in the last two to three decades owing to its importance in different fields. To control this CO pollution, catalytic converters have been investigated. Different types of catalysts have been used in a catalytic converter for CO emission control purposes. Platinum (Pt)-based noble metal catalysts show great potential for CO oxidation in catalytic converters with high thermal stability and tailoring flexibility. Pt metal catalysts modified with promoters such as alkali metals and reducible metal oxides have received great attention for their superior catalytic activities in CO oxidation. Temperature, close environment of the catalyst, and chemical composition in the surface layer of the catalyst have a huge effect on the active phase dispersion and O2 adsorption capacity of the Pt metal catalysts. The main difference in activities of Pt metal catalyst for CO oxidation in O2 or H2 atmosphere has found. The addition of supports in Pt metal catalysts has improved their performances and reduced their cost. These improvement strongly depends on the surface structure, morphology, number of active sites, and various Pt-O interactions. Many research articles have already been published in CO oxidation over Pt metal catalysts, but no review article dedicated to CO oxidation is available in the literature.

中文翻译:

低温一氧化碳氧化铂催化剂的性质和结构

摘要 一氧化碳(CO)的氧化由于其在不同领域的重要性,在过去的两到三年中受到了越来越多的关注。为了控制这种 CO 污染,已经研究了催化转化器。不同类型的催化剂已用于催化转化器中以控制 CO 排放。铂 (Pt) 基贵金属催化剂在具有高热稳定性和定制灵活性的催化转化器中显示出巨大的 CO 氧化潜力。用碱金属和可还原金属氧化物等助催化剂改性的 Pt 金属催化剂因其优异的 CO 氧化催化活性而备受关注。催化剂的温度、密闭环境、催化剂表层的化学成分和化学成分对铂金属催化剂的活性相分散和O2吸附能力有巨大影响。已发现 Pt 金属催化剂在 O2 或 H2 气氛中用于 CO 氧化的主要差异。在 Pt 金属催化剂中添加载体提高了它们的性能并降低了它们的成本。这些改进很大程度上取决于表面结构、形态、活性位点的数量和各种 Pt-O 相互作用。许多研究文章已经发表在 Pt 金属催化剂上的 CO 氧化,但文献中没有专门针对 CO 氧化的评论文章。在 Pt 金属催化剂中添加载体提高了它们的性能并降低了它们的成本。这些改进很大程度上取决于表面结构、形态、活性位点的数量和各种 Pt-O 相互作用。许多研究文章已经发表在 Pt 金属催化剂上的 CO 氧化,但文献中没有专门针对 CO 氧化的评论文章。在 Pt 金属催化剂中添加载体提高了它们的性能并降低了它们的成本。这些改进很大程度上取决于表面结构、形态、活性位点的数量和各种 Pt-O 相互作用。许多研究文章已经发表在 Pt 金属催化剂上的 CO 氧化,但文献中没有专门针对 CO 氧化的评论文章。
更新日期:2020-06-01
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