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

被引：85

作者：

Ilinitch, OM

Nosova, LV

Gorodetskii, VV

Ivanov, VP

Trukhan, SN

Gribov, EN

Bogdanov, SV

Cuperus, FP ^{[1
]}

机构：

[1] Stratingh Inst Chem & Chem Engn, NL-9747 AG Groningen, Netherlands

[2] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 158卷 / 01期

关键词：

catalytic reduction; metal catalyst; Pd; Pd-Cu;

D O I：

10.1016/S1381-1169(00)00070-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The catalytic behavior of mono- and bimetallic catalysts with Pd and/or Cu supported over gamma-Al2O3 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 NO3- and NO2- reduction by H-2 as well as the role of Pd and Cu active sites are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：237 / 249

页数：13

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