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| Research progress on denitrification catalysts for selective catalytic reduction of ammonia from stationary sources |
| XIONG Shang-chao, ZHONG Ruo-lan, ZHOU Shi-yu, WANG Xin-yu, Ou Hong-jun |
| Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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Abstract Selective catalytic reduction of NOx by NH3(NH3-SCR) technology is the most effective NOx emission control technology of stationary source at present. Catalyst is the core of NH3-SCR, among which metal oxide catalyst has been most extensively used. Domestic and foreign scholars have conducted a lot of studies and exploration on the reaction activity and poisoning mechanism of metal oxide catalyst of NH3-SCR in stationary source. Therefore, this paper reviews the research progress of stationary source NH3-SCR catalysts, including vanadium-, manganese-, cerium-, iron- and copper-based catalysts. The poisoning mechanism and toxic resistance strategy of sulfur dioxide, alkali metals, heavy metals and phosphorus/halogens are summarized. The existing problems are considered, and the development trend of stationary source NH3-SCR denitrification technology in the future is further prospected.
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Received: 13 September 2022
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