Effect of TiO_2 surface properties on the SCR activity of Nox emission abatement catalysis

Article type: Research Article

Authors: Ye, Dai-qi | Tian, Liu-qing | Liang, Hong

Affiliations: Department of Environmental Science and Engineering, School ofPaper Making & Environmental Engineering, South China University ofTechnology, Guangzhou 510640, China | Department of Light Chemical Engineering, Guangzhou University,Guangzhou 510090,China

Abstract: NOx emission abatement catalysts V_2O_5 supported on various TiO_2 including anatase, rutile and mixture of both have been investigated with various physico-chemical measurements such as BET, NH_3-TPD, NARP, XRD and so on, and the effect of TiO_2 surface properties on the SCR activity of V_2O_5/TiO_2 catalysts was studied.It has been found that the TiO_2 surface properties had strong affect on the SCR activity of V_2O_5/TiO_2 catalysts. The stronger acidic property resulted the higher exposure of active sites aswell as the higher SCR activity.

Keywords: NOx, SCR, V2O5/TiO2 catalyst, surface acidity

Journal: Journal of Environmental Sciences, vol. 14, no. 4, pp. 530-535, 2002