低温SCR脱硝催化剂的研究现状与挑战

The Research Status and Challenges of Low Temperature SCR Catalysts for Denitrification

综述了贵金属、分子筛、碳基和金属氧化物SCR催化剂的研究进展,全面阐述了影响低温催化剂活性的因素,包括前驱体引入方法、制备条件、载体预处理和催化剂结构,分析了SO_(2)和/或H_(2)O导致低温SCR催化剂中毒/失活的机理及缓解方式,总结了提高SCR催化剂抗毒化能力的方法并指出了未来研究的发展方向。

An overview of the research progress is presented on selective catalytic reduction(SCR)catalysts of noble metals,molecular sieves,carbon-based and metallic oxides.Factors influencing the activity of low-temperature catalysts are comprehensively discussed including precursor introduction methods,preparation conditions,carrier pretreatment and catalyst structure.Additionally,the mechanism and the ways to mitigate the sulphur dioxide and/or water poisoning/inactivation of low-temperature SCR catalysts are analysed.Methods for enhancing the anti-poisoning power of SCR catalysts are summarised whilst indicating a development orientation for the future research.