Mn-Ce系列低温SCR催化剂抗硫性研究进展

doi:10.16085/j.issn.1000-6613.2015.07.009

摘要/Abstract

摘要： 低温选择性催化还原(SCR)工艺具有节约能耗和运行成本的优点, 但是其催化剂存在SO₂中毒的问题, 使其难以用于工业化, 因此对低温SCR催化剂抗硫性的研究就尤为重要, 其中Mn-Ce系列催化剂是研究较多、抗硫效果较好的催化剂。本文介绍了SO₂对Mn-Ce系列催化剂的毒化机制及Ce提高催化剂抗硫性的原因, 并且从载体选择、制备方法、金属元素改性和量子化学在抗硫性领域中的应用等方面综述了近年来关于Mn-Ce系列催化剂抗硫性的研究进展, 其中量子化学在SCR领域中的迅速发展对催化剂抗硫性的研究有重要帮助, 可能成为未来脱硝领域的研究发展方向, 为今后进一步提高催化剂的性能提供借鉴。

关键词: 选择性催化还原, Mn-Ce, 抗硫性

Abstract: Low temperature selective catalytic reduction (SCR) has the advantage of low energy consumption and operating cost. However, the poor SO₂ resistance of catalysts hampers its industrial application. Mn-Ce catalysts were studied by many researchers due to their relatively better SO₂ resistance. This paper introduces the deactivation mechanisms of Mn-Ce catalysts. In addition, based on support selection, methods of catalyst preparation, modification of metallic element and quantum chemistry application in this field, the development of SO₂ resistance of Mn-Ce catalysts are discussed. Among them, the rapid development of quantum chemistry is helpful to the research of SO₂ resistance and may become a main research area in this field in the future. Moreover, it may provide a reference for future research to improve the performance of catalysts.

Key words: selective catalytic reduction, manganese-cerium, sulfur dioxide resistance

中图分类号:

O643.36⁺2

张呈祥, 张晓鹏. Mn-Ce系列低温SCR催化剂抗硫性研究进展[J]. 化工进展, 2015, 34(07): 1866-1871,1932.

ZHANG Chengxiang, ZHANG Xiaopeng. Research progress in the SO₂ resistance of Mn-Ce SCR catalysts[J]. Chemical Industry and Engineering Progree, 2015, 34(07): 1866-1871,1932.

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