Production of OH on polycrystalline nickel studied by thermal desorption/laser-induced fluorescence

J. T. Keiser; M. A. Hoffbauer; Ming-Chang Lin

doi:10.1021/j100258a040

Production of OH on polycrystalline nickel studied by thermal desorption/laser-induced fluorescence

J. T. Keiser, M. A. Hoffbauer, Ming-Chang Lin^*

^*Corresponding author for this work

Department of Applied Chemistry

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

26 Scopus citations

Abstract

The production of hydroxyl radical following either the reaction of H₂/O₂ mixtures or the dissociation of H₂O on polycrystalline nickel has been studied in a flow system. The hydroxyl radicals were detected in the gas phase by laser-induced fluorescence (LIF) following desorption from the catalyst surface at temperatures above 850 K. The apparent activation energy for OH desorption from nickel varied from 26 to 40 kcal/mol depending upon the O/H ratio. The effect of the partial pressure of O₂ and H₂ on the OH production rate was measured and a mechanism to explain these results is proposed. The reaction of CO + H₂ over polycrystalline nickel was also studied. However, no OH radicals were detected desorbing from the surface at temperatures up to 1350 K.

Original language	English
Pages (from-to)	2635-2638
Number of pages	4
Journal	Journal of physical chemistry
Volume	89
Issue number	12
DOIs	https://doi.org/10.1021/j100258a040
State	Published - 1 Dec 1985

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title = "Production of OH on polycrystalline nickel studied by thermal desorption/laser-induced fluorescence",

abstract = "The production of hydroxyl radical following either the reaction of H2/O2 mixtures or the dissociation of H2O on polycrystalline nickel has been studied in a flow system. The hydroxyl radicals were detected in the gas phase by laser-induced fluorescence (LIF) following desorption from the catalyst surface at temperatures above 850 K. The apparent activation energy for OH desorption from nickel varied from 26 to 40 kcal/mol depending upon the O/H ratio. The effect of the partial pressure of O2 and H2 on the OH production rate was measured and a mechanism to explain these results is proposed. The reaction of CO + H2 over polycrystalline nickel was also studied. However, no OH radicals were detected desorbing from the surface at temperatures up to 1350 K.",

author = "Keiser, {J. T.} and Hoffbauer, {M. A.} and Ming-Chang Lin",

year = "1985",

month = dec,

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doi = "10.1021/j100258a040",

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journal = "Journal of physical chemistry",

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T1 - Production of OH on polycrystalline nickel studied by thermal desorption/laser-induced fluorescence

AU - Keiser, J. T.

AU - Hoffbauer, M. A.

AU - Lin, Ming-Chang

PY - 1985/12/1

Y1 - 1985/12/1

N2 - The production of hydroxyl radical following either the reaction of H2/O2 mixtures or the dissociation of H2O on polycrystalline nickel has been studied in a flow system. The hydroxyl radicals were detected in the gas phase by laser-induced fluorescence (LIF) following desorption from the catalyst surface at temperatures above 850 K. The apparent activation energy for OH desorption from nickel varied from 26 to 40 kcal/mol depending upon the O/H ratio. The effect of the partial pressure of O2 and H2 on the OH production rate was measured and a mechanism to explain these results is proposed. The reaction of CO + H2 over polycrystalline nickel was also studied. However, no OH radicals were detected desorbing from the surface at temperatures up to 1350 K.

AB - The production of hydroxyl radical following either the reaction of H2/O2 mixtures or the dissociation of H2O on polycrystalline nickel has been studied in a flow system. The hydroxyl radicals were detected in the gas phase by laser-induced fluorescence (LIF) following desorption from the catalyst surface at temperatures above 850 K. The apparent activation energy for OH desorption from nickel varied from 26 to 40 kcal/mol depending upon the O/H ratio. The effect of the partial pressure of O2 and H2 on the OH production rate was measured and a mechanism to explain these results is proposed. The reaction of CO + H2 over polycrystalline nickel was also studied. However, no OH radicals were detected desorbing from the surface at temperatures up to 1350 K.

UR - http://www.scopus.com/inward/record.url?scp=0041752674&partnerID=8YFLogxK

U2 - 10.1021/j100258a040

DO - 10.1021/j100258a040

M3 - Article

AN - SCOPUS:0041752674

SN - 0022-3654

VL - 89

SP - 2635

EP - 2638

JO - Journal of physical chemistry

JF - Journal of physical chemistry

IS - 12

ER -

Production of OH on polycrystalline nickel studied by thermal desorption/laser-induced fluorescence

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