Electrocatalytic nitrate reduction on palladium based catalysts activated with germanium

被引：59

作者：

Gootzen, JFE

Lefferts, L

van Veen, JAR

机构：

[1] Schuit Inst Catalysis, Inorgan Chem & Catalysis Lab, Dept Chem Engn, NL-5600 MB Eindhoven, Netherlands

[2] DSM Res, NL-6160 MD Geleen, Netherlands

来源：

APPLIED CATALYSIS A-GENERAL | 1999年 / 188卷 / 1-2期

关键词：

nitrate; nitrogen oxide; palladium; platinum; germanium; electrocatalysis; adsorption; electrochemistry;

D O I：

10.1016/S0926-860X(99)00221-5

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 electrocatalytic reduction of nitrate has been studied with electrochemical methods on palladium and palladium-platinum electrodes activated with germanium. The formation of a palladium-germanium alloy that occurs at germanium coverage above 0.2 has a strong enhancing effect on the rate of nitrate reduction, whereas the reaction rate is low for germanium coverage below 0.2. Palladium electrodes covered with a submonolayer platinum are effectively activated by a low germanium coverage. Cyclic voltammetry of adsorbed NO shows that the higher reactivity of palladium-platinum electrodes in the nitrate reduction is related to the higher reactivity of platinum towards NO reduction as compared to palladium. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：127 / 136

页数：10

共 13 条

[1] STUDY OF THE UNDERPOTENTIAL DEPOSITION OF GERMANIUM ONTO POLYCRYSTALLINE PALLADIUM SURFACES
BAKOS, I
SZABO, S
NAGY, F
MALLAT, T
BODNAR, Z
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1991, 309 (1-2) : 293 - 301
[2] BULK ALLOY FORMATION DURING GE ADSORPTION ONTO A PD-POWDER CATALYST
BODNAR, Z
MALLAT, T
BAIKER, A
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1993, 358 (1-2): : 327 - 331
[3] OXIDATION-STATE OF GERMANIUM PROMOTER ON A PALLADIUM CARBON CATALYST AND ITS ROLE IN HYDROGENATION REACTIONS
BODNAR, Z
MALLAT, T
BAKOS, I
SZABO, S
ZSOLDOS, Z
SCHAY, Z
[J]. APPLIED CATALYSIS A-GENERAL, 1993, 102 (02) : 105 - 123
[4] The study of NO adsorbate layers on platinized platinum in the liquid phase with cyclic voltammetry, DEMS and FTIRS
Gootzen, JFE
vanHardeveld, RM
Visscher, W
vanSanten, RA
vanVeen, JAR
[J]. RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS-JOURNAL OF THE ROYAL NETHERLANDS CHEMICAL SOCIETY, 1996, 115 (11-12): : 480 - 485
[5] The electrocatalytic reduction of NO3- on Pt, Pd and Pt+Pd electrodes activated with Ge
Gootzen, JFE
Peeters, PGJM
Dukers, JMB
Lefferts, L
Visscher, W
vanVeen, JAR
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 434 (1-2): : 171 - 183
[6] HAMMER B, 1997, NATO ATO SERIES E, V331
[7] BULK ALLOY FORMATION DURING METAL-ION POISONING OF PALLADIUM
MALLAT, T
BODNAR, Z
SZABO, S
PETRO, J
[J]. APPLIED CATALYSIS, 1991, 69 (01): : 85 - 95
[8] On the voltammetric and spectroscopic characterization of nitric oxide adlayers formed from nitrous acid on Pt(h,k,1) and Rh(h,k,1) electrodes
Rodes, A
Gomez, R
Perez, JM
Feliu, JM
Aldaz, A
[J]. ELECTROCHIMICA ACTA, 1996, 41 (05) : 729 - 745
[9] THE NATURE OF THE METAL METAL BOND IN BIMETALLIC SURFACES
RODRIGUEZ, JA
GOODMAN, DW
[J]. SCIENCE, 1992, 257 (5072) : 897 - 903
[10] Surface electronic structure and reactivity of transition and noble metals
Ruban, A
Hammer, B
Stoltze, P
Skriver, HL
Norskov, JK
[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1997, 115 (03) : 421 - 429

← 1 2 →