Improving the catalytic nitrate reduction

Improving the catalytic nitrate reduction

Technologies for the nitrate removal from drinking water and waste water will be required in the near future and the catalytic nitrate reduction is one of the most promising ones. To establish a technical-scale nitrate reduction a further improvement of the catalyst is necessary and new concepts sho...

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Bibliographic Details
Published in:Catalysis today Vol. 55; no. 1; pp. 79 - 90
Main Authors: Prüsse, Ulf, Hähnlein, Marc, Daum, Jörg, Vorlop, Klaus-Dieter
Format: Journal Article Conference Proceeding
Language:English
Published: Amsterdam Elsevier B.V 05-01-2000
Elsevier Science
Subjects:
Applied sciences
Catalysis
Catalyst
Catalysts: preparations and properties
Chemistry
Exact sciences and technology
Formic acid
General and physical chemistry
Nitrate reduction
Palladium–indium
Palladium–tin
Pollution
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Water treatment and pollution
Palladium–tin
Palladium–indium
Formic acid
Nitrate reduction
Catalyst
Mixed catalyst
Drinking water
Water treatment
Transition metal
Nitrates
Palladium
Group IVA element
Indium
Supported catalyst
Waste water
Chemical reduction
Heterogeneous catalysis
Group IIIB metal
Tin
Copper
Platinoid
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Summary:Technologies for the nitrate removal from drinking water and waste water will be required in the near future and the catalytic nitrate reduction is one of the most promising ones. To establish a technical-scale nitrate reduction a further improvement of the catalyst is necessary and new concepts should be introduced in the process. It is shown, that palladium–tin and palladium–indium catalysts can be much more suited for an efficient nitrate reduction than palladium–copper catalysts. Furthermore, two new innovative concepts are presented — the use of in situ buffering formic acid as reductant instead of hydrogen and the application of PVAL-encapsulated catalysts with superior diffusional properties — which may contribute to solve selectivity problems.
ISSN:0920-5861
1873-4308
DOI:10.1016/S0920-5861(99)00228-X