Performance impact and poisoning mechanism of arsenic over commercial V2O5–WO3TiO2 SCR catalyst》.pdfVIP

Catalysis Communications 72 (2015) 121–126 Contents lists available at ScienceDirect Catalysis Communications journal h omepage: /locate/catcom Short communication Performance impact and poisoning mechanism of arsenic over commercial V O –WO /TiO SCR catalyst 2 5 3 2 Ming Kong a, Qingcai Liu a, Xiaoqing Wang a, Shan Ren a,⁎, Jian Yang a, Dong Zhao a, Wenchang Xi b, Lu Yao a a Engineering Research Center for Energy and Environment of Chongqing, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China b Chongqing Yuanda Catalyst Manufacturing Co., LTD. Chongqing 401336, PR China a r t i c l e i n f o a b s t r a c t Article history: The performance impact and poisoning mechanism of arsenic on commercial V O –WO /TiO SCR catalysts were 2 5 3 2 Received 9 May 2015 studied. XRD, BET, FT-IR and XPS were used to characterize its physical–chemical properties. The results showed Received in revised form 13 September 2015 that As2O3 would be adsorbed on the catalyst surface and most oxidized by surface chemisorption oxygen to ul- Accepted 29 September 2015 timately form As O . Lattice oxygen of V O may also be transformed into surface sorption oxygen to oxidize 2 5 2 5 Available online xxxx