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锰基催化剂用于氨选择性催化还原NO中SO和HO的抗性：最新进展与展望

The Resistance of SO and HO of Mn-Based Catalysts for NO Selective Catalytic Reduction with Ammonia: Recent Advances and Perspectives.

作者信息

Tang Jungang, Wang Xuetao, Li Haojie, Xing Lili, Liu Mengjie

机构信息

Department of Energy and Power Engineering, Henan University of Science and Technology, Luoyang 471003, China.

出版信息

ACS Omega. 2023 Feb 16;8(8):7262-7278. doi: 10.1021/acsomega.2c06796. eCollection 2023 Feb 28.

DOI:10.1021/acsomega.2c06796
PMID:36872970
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9979361/
Abstract

The treatment of NO has become an urgent issue due to it being difficult to degrade in air and its tremendous adverse impact on public health. Among numerous NO emission control technologies, the technology of selective catalytic reduction (SCR) using ammonia (NH) as the reducing agent (NH-SCR) is regarded as the most effective and promising technique. However, the development and application of high-efficiency catalysts is severely limited due to the poisoning and deactivation effect by SO and HO vapor in the low-temperature NH-SCR technology. In this review, recent advances in the catalytic effects from increasing the rate of the activity in low-temperature NH-SCR by manganese-based catalysts and the stability of resistance to HO and SO during catalytic denitration are reviewed. In addition, the denitration reaction mechanism, metal modification, preparation methods, and structures of the catalyst are highlighted, and the challenges and potential solutions for the design of a catalytic system for degenerating NO over Mn-based catalysts with high resistance of SO and HO are discussed in detail.

摘要

由于一氧化氮（NO）在空气中难以降解且对公众健康有巨大的不利影响，其治理已成为一个紧迫的问题。在众多的NO排放控制技术中，以氨（NH₃）作为还原剂的选择性催化还原（SCR）技术（NH₃-SCR）被认为是最有效且最具前景的技术。然而，在低温NH₃-SCR技术中，由于SO₂和H₂O蒸汽的中毒和失活作用，高效催化剂的开发和应用受到严重限制。在这篇综述中，综述了通过锰基催化剂提高低温NH₃-SCR活性速率以及催化脱硝过程中对H₂O和SO₂抗性稳定性的催化效应的最新进展。此外，突出了脱硝反应机理、金属改性、催化剂的制备方法和结构，并详细讨论了设计具有高SO₂和H₂O抗性的锰基催化剂上降解NO的催化系统所面临的挑战和潜在解决方案。

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