In situ FT-IR study of highly dispersed MnO_x/SAPO-34 catalyst for low-temperature selective catalytic reduction of NO_x by NH₃

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• 作者：Chenglong Yu^a ; Bichun Huang^a ; ^b ; ^{cebhuang@scut.edu.cn} ; Lifu Dong^a ; Feng Chen^a ; Xiaoqing Liu^a
• 关键词：Low temperature SCR ; Highly dispersed ; MnOx/SAPO-34 catalyst ; in-situ FT-IR ; Reaction pathways
• 刊名：Catalysis Today
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：281
• 期：part_P3
• 页码：610-620
• 全文大小：3296 K
• 卷排序：281

文摘

Highly dispersed MnOx/SAPO-34 catalyst showed both high SCR activity and N2 selectivity at low temperatures. The –NH2 species may play a very important role in determining the activity of the catalysts. The bridged nitrate species is the key intermediates in NH3-SCR reaction over the catalysts. Two possible reaction pathways involved with E-R and L-H mechanisms were proposed.