Pretreatment techniques in CO-SCR and NH3-SCR: Status, challenges, and perspectives

IF 6.5 1区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Catalysis Pub Date : 2024-12-24 DOI:10.1016/j.jcat.2024.115925

Guiyao Dai, Botao Liu, Ruijing Wang, Huanli Wang, Yaxin Miao, Shujun Hou, Dianxing Lian, Mohaoyang Chen, Chenxi Li, Zhijin Zhang, Bushi Dang, Jingchun Liu, Weiwei Zhang, Ke Wu, Honggen Peng, Guofeng Zhao, Yuxi Liu, Yongjun Ji

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引用次数: 0

Abstract

The selective catalytic reduction (SCR) of NO_x, utilizing carbon monoxide (CO) and ammonia (NH₃), is recognized as an effective approach for NO_x abatement. During the SCR process, the appropriate pretreatment of catalysts can significantly enhance their surface and interfacial structures, thereby improving their activity, selectivity, and stability. This review begins with the reaction mechanisms of CO-SCR and NH₃-SCR, followed by an introduction to various pretreatment strategies that can enhance the performance of catalysts employed in these two reactions. An in-depth discussion is provided regarding how different pretreatment methods influence the active structure of catalysts, the key steps of the reactions, and the overall catalytic performance. Subsequently, a comparative analysis of the pretreatment strategies employed for both reactions is presented, highlighting their similarities and differences, thereby elucidating the essence of pretreatment techniques. Lastly, the paper identifies the current challenges encountered in the field of pretreatment and proposes potential directions for future development. This work aims to offer theoretical insights that may inspire innovative pretreatment strategies in CO-SCR and NH₃-SCR among researchers and engineers.

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来源期刊

Journal of Catalysis 工程技术-工程：化工

CiteScore

12.30

自引率

5.50%

发文量

447

审稿时长

31 days

期刊介绍： The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes. The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods. The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.