fulltext.study @t Gmail

Spectroscopic evidence for the mode of action of alkali promoters in Pt-catalyzed de-NOx chemistry

Paper ID Volume ID Publish Year Pages File Format Full-Text
48502 46510 2007 6 PDF Available
Title
Spectroscopic evidence for the mode of action of alkali promoters in Pt-catalyzed de-NOx chemistry
Abstract

The interaction of NO with sodium-dosed Pt(Na)/γ-Al2O3 catalysts was studied by means of diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). With increasing sodium loading, pronounced and progressive red shifts of the NO stretching frequency associated with molecular NO adsorbed on the Pt component were observed. This decrease in ν(NO) correlates with enhancement of NO dissociation at higher temperatures on Na-promoted Pt catalysts under conditions where clean Pt is almost ineffective. These spectroscopic observations provide a clear and consistent explanation for the recently reported very strong promotion by alkalis of the performance of supported Pt catalysts in de-NOx chemistry [I.V. Yentekakis, M. Konsolakis, R.M. Lambert, N. Macleod, L. Nalbandian, Appl. Catal. B 22 (1999) 123; I.V. Yentekakis, V. Tellou, G. Botzolaki, I.A. Rapakousios, Appl. Catal. B 56 (2005) 229].

Keywords
Infrared spectroscopy; Platinum; Sodium; Al2O3; NO adsorption
First Page Preview
Spectroscopic evidence for the mode of action of alkali promoters in Pt-catalyzed de-NOx chemistry
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 76, Issues 1–2, 30 October 2007, Pages 101–106
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us