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Selective catalytic oxidation of NH(3)over noble metal-based catalysts: state of the art and future prospects

机译：NH(3)的选择性催化氧化/高贵金属催化剂:艺术的状态未来前景

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Selective catalytic oxidation of ammonia to nitrogen and water vapor (NH3-SCO) is considered to be an efficient technique to eliminate hazardous and pungent gaseous NH(3)is mainly emitted from selective catalytic reduction of NO(x)with NH(3)units using appropriate catalysts. Due to the satisfactory low-temperature ammonia oxidation activity, noble metal-based catalysts are the primary groups applied in the NH3-SCO reaction on account of their unique intrinsic properties. Meanwhile, it is essential that selectivity towards byproducts, including NO, NO(2)and N2O, is as low as possible so that the high N(2)selectivity meets the stringent environmental policies in practical scenarios. To provide an overview of the NH3-SCO reaction, this review starts with a general understanding of reaction mechanisms and catalyst promotion strategies. After that, the noble metal-based catalysts, namely Pt, Ag, Ru, Ir, Pd, Au and Rh-based catalysts, are discussed from the aspects of the regulation of active species, the adsorption and activation of reactants and intermediates, the formation of N-containing products and the coupling effects with NH3-SCR catalysts. Finally, a condensed summary of previous work as well as reasonable suggestions and perspectives on future trends in this field are presented. To the best of our knowledge, this is the first comprehensive review on the application of noble metal-based catalysts in the NH3-SCO reaction and we hope that this article will shed light on the rational catalyst design and in understanding the structure-property relationships of noble metal-based NH3-SCO catalysts.
机译：的选择性催化氧化氨氮和水蒸气(NH3-SCO)被认为是是一个有效的技术来消除危险和辛辣气体NH(3)是主要的发出的选择性催化还原没有(x)与NH(3)单位使用适当的催化剂。由于满意的低温氨氧化活性,高贵的金属催化剂初级组应用于NH3-SCO吗由于他们独特的内在反应属性。对副产物选择性,包括不,(2)和一氧化二氮,是尽可能低的高N(2)选择性满足严格的环境政策在实际场景。概述NH3-SCO的反应,这一点回顾从一般的理解开始催化剂反应机制和晋升策略。催化剂,即Pt、Ag)、Ir、Pd、非盟和俄文Rh-based催化剂,将从讨论方面的活性物种的规定,吸附和活化反应物和中间体,N-containing的形成产品和与NH3-SCR耦合效应催化剂。以前的工作以及合理的建议和观点在这一领域未来的发展趋势提出了。是第一个全面审查的吗高贵的金属催化剂的应用我们希望本文NH3-SCO反应阐明合理的催化剂设计吗并在理解组织性能高贵的金属NH3-SCO的关系催化剂。

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