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Kinetics of photocatalytic reduction of NO by CO with Pd2+-Ion-Substituted Nano-TiO2

Roy, Sounak and Aarthi, T and Hegde, MS and Madras, Giridhar (2007) Kinetics of photocatalytic reduction of NO by CO with Pd2+-Ion-Substituted Nano-TiO2. In: Industrial & Engineering Chemistry Research, 46 (17). pp. 5798-5802.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/ie0704593

Abstract

The objective of the present study is to develop the reaction mechanism and kinetics of photoreduction of NO by CO. For this purpose, the reactions were conducted in the presence of Pd-ion-substituted nano-TiO2, Ti1-xPdxO2-delta, which was synthesized via a solution combustion method. The photocatalytic activity was investigated with unsubstituted TiO2, 1% Pd/TiO2(imp), and Ti1-xPdxO2-delta (where x = 0.05-0.3). No appreciable NO conversion was observed over unsubstituted TiO2, although, despite competitive adsorption of NO and CO on the Pd2+ sites, there was a significant reduction of NO over Ti1-xPdxO2-delta. The kinetic model showed that the enhanced catalytic activity is due to the NO photodissociation at the oxide-ion vacancy.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Chemical Society.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 30 Mar 2010 12:00
Last Modified: 22 Feb 2012 06:21
URI: http://eprints.iisc.ernet.in/id/eprint/26278

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