In situ ATR-IR study of nitrite hydrogenation over Pd/Al2O3.

S.D. Ebbesen; Barbara Mojet; Leonardus Lefferts

doi:10.1016/j.jcat.2008.02.013

In situ ATR-IR study of nitrite hydrogenation over Pd/Al2O3.

S.D. Ebbesen, Barbara Mojet, Leonardus Lefferts

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Abstract

The mechanism of nitrite hydrogenation over a Pd/Al2O3 catalyst layer deposited on a ZnSe internal reflection element was investigated in water using attenuated total reflection infrared spectroscopy. Nitrite hydrogenates to NO(ads), NH2(ads), and NH+4 on the palladium surface. Hydrogenation of adsorbed NO on palladium results in the formation of a reaction product that is not infrared-active (most likely nitrogen), whereas no NH+4 is formed from NO(ads). NH+4 is formed solely from hydrogenation of the NH2(ads) intermediate. The present study clearly shows that formation of nitrogen and NH+4 proceeds via two separate pathways, based on which a revised reaction scheme is proposed.

Original language	Undefined
Pages (from-to)	15-23
Number of pages	9
Journal	Journal of catalysis
Volume	256
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2008.02.013
Publication status	Published - 2008

Keywords

IR-75811
METIS-250576

Access to Document

10.1016/j.jcat.2008.02.013

Cite this

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title = "In situ ATR-IR study of nitrite hydrogenation over Pd/Al2O3.",

abstract = "The mechanism of nitrite hydrogenation over a Pd/Al2O3 catalyst layer deposited on a ZnSe internal reflection element was investigated in water using attenuated total reflection infrared spectroscopy. Nitrite hydrogenates to NO(ads), NH2(ads), and NH+4 on the palladium surface. Hydrogenation of adsorbed NO on palladium results in the formation of a reaction product that is not infrared-active (most likely nitrogen), whereas no NH+4 is formed from NO(ads). NH+4 is formed solely from hydrogenation of the NH2(ads) intermediate. The present study clearly shows that formation of nitrogen and NH+4 proceeds via two separate pathways, based on which a revised reaction scheme is proposed.",

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year = "2008",

doi = "10.1016/j.jcat.2008.02.013",

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journal = "Journal of catalysis",

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TY - JOUR

T1 - In situ ATR-IR study of nitrite hydrogenation over Pd/Al2O3.

AU - Ebbesen, S.D.

AU - Mojet, Barbara

AU - Lefferts, Leonardus

PY - 2008

Y1 - 2008

N2 - The mechanism of nitrite hydrogenation over a Pd/Al2O3 catalyst layer deposited on a ZnSe internal reflection element was investigated in water using attenuated total reflection infrared spectroscopy. Nitrite hydrogenates to NO(ads), NH2(ads), and NH+4 on the palladium surface. Hydrogenation of adsorbed NO on palladium results in the formation of a reaction product that is not infrared-active (most likely nitrogen), whereas no NH+4 is formed from NO(ads). NH+4 is formed solely from hydrogenation of the NH2(ads) intermediate. The present study clearly shows that formation of nitrogen and NH+4 proceeds via two separate pathways, based on which a revised reaction scheme is proposed.

AB - The mechanism of nitrite hydrogenation over a Pd/Al2O3 catalyst layer deposited on a ZnSe internal reflection element was investigated in water using attenuated total reflection infrared spectroscopy. Nitrite hydrogenates to NO(ads), NH2(ads), and NH+4 on the palladium surface. Hydrogenation of adsorbed NO on palladium results in the formation of a reaction product that is not infrared-active (most likely nitrogen), whereas no NH+4 is formed from NO(ads). NH+4 is formed solely from hydrogenation of the NH2(ads) intermediate. The present study clearly shows that formation of nitrogen and NH+4 proceeds via two separate pathways, based on which a revised reaction scheme is proposed.

KW - IR-75811

KW - METIS-250576

U2 - 10.1016/j.jcat.2008.02.013

DO - 10.1016/j.jcat.2008.02.013

M3 - Article

SN - 0021-9517

VL - 256

SP - 15

EP - 23

JO - Journal of catalysis

JF - Journal of catalysis

IS - 1

ER -