Investigation of PdSn-catalysts for nitrate removal in drinking water processing

PdSn catalysts prepared by various methods and used for nitrate reduction were investigated by means of in situ 119mSn Mössbauer spectroscopy. Characterization by 119mSn Mössbauer spectroscopy revealed significant differences concerning the modification of the palladium particles supported on alumin...

Full description

Saved in:
Bibliographic Details
Published in:Hyperfine interactions 2000-01, Vol.126 (1-4), p.89-93
Main Authors: Menzel, M, Mehner, H, Mönnich, I, Berndt, H
Format: Article
Language:English
Subjects:
Aluminum oxide
Catalysts
Control surfaces
Drinking water
Impregnation
Mossbauer spectroscopy
Nitrate removal
Palladium
Selectivity
Spectrum analysis
Surface reactions
Tin
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:PdSn catalysts prepared by various methods and used for nitrate reduction were investigated by means of in situ 119mSn Mössbauer spectroscopy. Characterization by 119mSn Mössbauer spectroscopy revealed significant differences concerning the modification of the palladium particles supported on alumina. The controlled surface reaction preparation method (CSR) leads to formation of PdSn alloys with different tin contents besides small amounts of Sn(II) species and unalloyed metallic Sn. On the other hand the impregnation method leads to a small amount of PdSn alloys and higher contents of Sn(II) species. Sn(IV) species were found in both kinds of catalysts. The CSR prepared PdSn catalysts showed an improved activity and selectivity compared to the catalysts obtained by the impregnation method.
ISSN:0304-3843
1572-9540
DOI:10.1023/A:1012688627310