抗水、抗SO2的低温选择性催化还原催化剂研究进展

A review of research in H_2O and SO_2 resistant low-temperature SCR catalysts

低温选择性催化还原(SCR)脱除NOX是一种有潜力的烟气脱硝技术。综述了低温SCR催化剂受水蒸气和SO2毒害作用的机制,总结了催化剂制备方法、催化剂载体选择和催化剂活性成分对抗水、抗SO2性能的影响。为进一步开发抗水、抗SO2的低温SCR催化剂提供一定的借鉴意义。

The low-temperature selective catalytic reduction（SCR） of NOx is a promising technology for removing NOx from flue gases. Based on a comprehensive literature review, the paper summarizes the various deactivation mechanisms of low-temperature SCR catalysts due to water vapor and sulfur dioxide, the procedures and methods of catalyst preparation, the selection of the catalyst carrier, and the effects of catalyst＇s active ingredients on its tolerance to water vapor and sulfur dioxide. Additional research in those important areas will benefit the development of more cost effective H2O and SO2 resistant low-temperature SCR catalysts.