Heteropoly acid promoted V2O5/TiO2 catalysts for NO abatement with ammonia in alkali containing flue gases

Siva Sankar Reddy Putluru; Anker Degn Jensen; Anders Riisager; Rasmus Fehrmann

doi:10.1039/C1CY00081K

Heteropoly acid promoted V₂O₅/TiO₂catalysts for NO abatement with ammonia in alkali containing flue gases

Siva Sankar Reddy Putluru,^ab Anker Degn Jensen,^b Anders Riisager^a and Rasmus Fehrmann*^a

* Corresponding authors

^a Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Building 207, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
E-mail: rf@kemi.dtu.dk
Fax: +45 45883136
Tel: +45 45252389

^b Combustion and Harmful Emission Control Research Centre, Department of Chemical and Biochemical Engineering, Building 229, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark

Abstract

V₂O₅/TiO₂ and heteropoly acid promoted V₂O₅/TiO₂ catalysts were prepared and characterized by N₂ physisorption, XRPD and NH₃-TPD. The influence of the calcination temperature from 400 to 700 °C on crystallinity and acidic properties was studied and compared with the activity for the selective catalytic reduction (SCR) of NO with ammonia. The SCR activity of heteropoly acid promoted catalysts was found to be much higher than for unpromoted catalysts. The stability of heteropoly acid promoted catalysts is dependent on calcination temperature and there is a gradual decrease in SCR activity and acidity with increase in calcination temperatures. Furthermore, the heteropoly acid promoted V₂O₅/TiO₂ catalysts showed excellent alkali deactivation resistance and might therefore be alternative deNO_x catalysts in biomass fired power plants.

Article information

https://doi.org/10.1039/C1CY00081K

Article type

Paper

Submitted

07 Mar 2011

Accepted

29 Mar 2011

First published

26 Apr 2011

Download Citation

Catal. Sci. Technol., 2011,1, 631-637

Permissions

Request permissions

Heteropoly acid promoted V₂O₅/TiO₂ catalysts for NO abatement with ammonia in alkali containing flue gases

S. S. R. Putluru, A. D. Jensen, A. Riisager and R. Fehrmann, Catal. Sci. Technol., 2011, 1, 631 DOI: 10.1039/C1CY00081K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Catalysis Science & Technology