Electrocatalytic reduction of NO3- on palladium/copper electrodes

A.C.A. Vooys, de; R.A. Santen, van; J.A.R. Veen, van

doi:10.1016/S1381-1169(99)00375-1

Electrocatalytic reduction of NO3- on palladium/copper electrodes

A.C.A. Vooys, de
, R.A. Santen, van
, J.A.R. Veen, van

Research output: Contribution to journal › Article › Academic › peer-review

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43 Downloads (Pure)

Abstract

The reduction of NO3- on palladium/copper electrodes has been studied using differential electrochemical mass spectroscopy (DEMS), rotating ring-disk electrodes (RRDE) and quartz microbalance electrodes (ECQM). In acidic electrolytes, the activity increases linearly with Cu coverage, in alkaline electrolytes, a different dependence on coverage is observed. One monolayer of Cu gives a different selectivity from bulk copper. The adsorption of NO3- is competitive with SO42-, whereas Cl- adsorption blocks the reduction. Competitive adsorption lowers both the activity and the selectivity to N-2. Copper activates the first electron transfer, the role of palladium is to steer the selectivity towards N-2. The trends in activity and selectivity are explained in terms of coverage of N-species. (C) 2000 Elsevier Science B.V. All rights reserved

Original language	English
Pages (from-to)	203-215
Number of pages	13
Journal	Journal of Molecular Catalysis A: Chemical
Volume	154
Issue number	1-2
DOIs	https://doi.org/10.1016/S1381-1169(99)00375-1
Publication status	Published - 2000

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title = "Electrocatalytic reduction of NO3- on palladium/copper electrodes",

abstract = "The reduction of NO3- on palladium/copper electrodes has been studied using differential electrochemical mass spectroscopy (DEMS), rotating ring-disk electrodes (RRDE) and quartz microbalance electrodes (ECQM). In acidic electrolytes, the activity increases linearly with Cu coverage, in alkaline electrolytes, a different dependence on coverage is observed. One monolayer of Cu gives a different selectivity from bulk copper. The adsorption of NO3- is competitive with SO42-, whereas Cl- adsorption blocks the reduction. Competitive adsorption lowers both the activity and the selectivity to N-2. Copper activates the first electron transfer, the role of palladium is to steer the selectivity towards N-2. The trends in activity and selectivity are explained in terms of coverage of N-species. (C) 2000 Elsevier Science B.V. All rights reserved",

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doi = "10.1016/S1381-1169(99)00375-1",

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pages = "203--215",

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T1 - Electrocatalytic reduction of NO3- on palladium/copper electrodes

AU - Vooys, de, A.C.A.

AU - Santen, van, R.A.

AU - Veen, van, J.A.R.

PY - 2000

Y1 - 2000

N2 - The reduction of NO3- on palladium/copper electrodes has been studied using differential electrochemical mass spectroscopy (DEMS), rotating ring-disk electrodes (RRDE) and quartz microbalance electrodes (ECQM). In acidic electrolytes, the activity increases linearly with Cu coverage, in alkaline electrolytes, a different dependence on coverage is observed. One monolayer of Cu gives a different selectivity from bulk copper. The adsorption of NO3- is competitive with SO42-, whereas Cl- adsorption blocks the reduction. Competitive adsorption lowers both the activity and the selectivity to N-2. Copper activates the first electron transfer, the role of palladium is to steer the selectivity towards N-2. The trends in activity and selectivity are explained in terms of coverage of N-species. (C) 2000 Elsevier Science B.V. All rights reserved

AB - The reduction of NO3- on palladium/copper electrodes has been studied using differential electrochemical mass spectroscopy (DEMS), rotating ring-disk electrodes (RRDE) and quartz microbalance electrodes (ECQM). In acidic electrolytes, the activity increases linearly with Cu coverage, in alkaline electrolytes, a different dependence on coverage is observed. One monolayer of Cu gives a different selectivity from bulk copper. The adsorption of NO3- is competitive with SO42-, whereas Cl- adsorption blocks the reduction. Competitive adsorption lowers both the activity and the selectivity to N-2. Copper activates the first electron transfer, the role of palladium is to steer the selectivity towards N-2. The trends in activity and selectivity are explained in terms of coverage of N-species. (C) 2000 Elsevier Science B.V. All rights reserved

U2 - 10.1016/S1381-1169(99)00375-1

DO - 10.1016/S1381-1169(99)00375-1

M3 - Article

SN - 1381-1169

VL - 154

SP - 203

EP - 215

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 1-2

ER -

Electrocatalytic reduction of NO3- on palladium/copper electrodes

Abstract

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