NH3-SCR脱硝技术的研究现状与展望

Research status and prospects of NH3-SCR denitration technology

氮氧化物是一类不容忽视的大气污染物。在众多脱硝技术中,借助NH3的选择性催化还原技术(NH3-SCR)被认为是最有效的氮氧化物脱除技术。目前,NH3-SCR法主要分为热选择性催化还原法、光选择性催化还原法和光热协同选择性催化还原法等。将重点关注光、热及光热协同脱硝催化材料的构筑和相应的催化脱硝机制的研究进展,并对光热协同选择性催化还原技术的发展方向进行了展望。

Nitrogen oxides are a class of atmospheric pollutants that cannot be ignored.Among the many denitrification technologies,the selective catalytic reduction of NOx with NH3(NH3-SCR)is considered to be the most effective means of nitrogen oxide removal.At present,the NH3-SCR method is mainly divided into a thermal selective catalytic reduction method,a photo selective catalytic reduction method,and a photo-thermal synergistic selective catalytic reduction method.This paper will focus on the construction of light,thermal and photo-thermal synergistic denitration catalytic materials and the corresponding research progress of catalytic denitrification mechanism,and prospects for the development direction of photothermal synergistic selective denitrification catalytic reduction technology.