A complete reaction mechanism for standard and fast selective catalytic reduction of nitrogen oxides on low coverage VO_x/TiO₂(0 0 1) catalysts

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• 作者：Logi Arnarson^a ; ^b ; Hanne Falsig^b ; Sø ; ren B. Rasmussen^b ; Jeppe V. Lauritsen^a ; Poul Georg Moses^b ; ^{pogm@topsoe.dk}
• 关键词：Selective catalytic reduction (SCR) ; Density functional theory (DFT) ; Reaction mechanism ; Vanadia ; TiO2 anatase
• 刊名：Journal of Catalysis
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：346
• 期：Complete
• 页码：188-197
• 全文大小：2419 K
• 卷排序：346

文摘

A reaction mechanism for the SCR process over V-based catalyst is proposed. The Standard and Fast SCR reactions are coupled reproducing the correct stoichiometry. Water desorption is rate determining at low temperatures for the Standard SCR reaction. At high temperatures the rate determining step is in the reduction part.