Catalytic reduction of nitrate and nitrite ions by hydrogen: investigation of the reaction mechanism over Pd and Pd–Cu catalysts

The catalytic behavior of mono- and bimetallic catalysts with Pd and/or Cu supported over γ-Al 2O 3 in the reduction of aqueous nitrate and nitrite ions by hydrogen was investigated. The composition of the supported metal catalysts was analysed using secondary ion mass spectroscopy (SIMS) and X-ray...

Full description

Saved in:
Bibliographic Details
Published in:Journal of molecular catalysis. A, Chemical Chemical, 2000-09, Vol.158 (1), p.237-249
Main Authors: Ilinitch, O.M, Nosova, L.V, Gorodetskii, V.V, Ivanov, V.P, Trukhan, S.N, Gribov, E.N, Bogdanov, S.V, Cuperus, F.P
Format: Article
Language:English
Subjects:
Catalytic reduction
Metal catalyst
Pd–Cu
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The catalytic behavior of mono- and bimetallic catalysts with Pd and/or Cu supported over γ-Al 2O 3 in the reduction of aqueous nitrate and nitrite ions by hydrogen was investigated. The composition of the supported metal catalysts was analysed using secondary ion mass spectroscopy (SIMS) and X-ray diffraction (XRD) techniques. Surface enrichment of the bimetallic Pd–Cu particles in copper was revealed. Interactions of NO (possible intermediate in reduction of nitrate and nitrite ions) with H 2 over Pd were studied by thermal desorption spectroscopy (TDS) under high-vacuum conditions. The molecular mechanism of NO 3 − and NO 2 − reduction by H 2 as well as the role of Pd and Cu active sites are discussed.
ISSN:1381-1169
1873-314X
DOI:10.1016/S1381-1169(00)00070-4