Adsorption and dissociation of ammonia on the hydroxylated surface of magnesium oxide powders

Salvatore Coluccia; Silvio Lavagnino; Leonardo Marchese

doi:10.1039/F19878300477

Adsorption and dissociation of ammonia on the hydroxylated surface of magnesium oxide powders

Salvatore Coluccia
, Silvio Lavagnino
, Leonardo Marchese

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A systematic infrared study has been performed concerning ammonia adsorption on high-surface-area MgO at successive stages of surface dehydroxylation. Ammonia is mostly held in molecular forms by hydroxyls, Mg²⁺ cations and O^2- anions exposed in low coordination on {001} planes. Heterolytic dissociation is also observed not only on fully dehydroxylated but also on hydroxylated samples. This process is monitored by the NH₂^- absorption at 1555 cm^-1.

Lingua originale	Inglese
pagine (da-a)	477-486
Numero di pagine	10
Rivista	Physical Chemistry Chemical Physics
Volume	83
Numero di pubblicazione	2
DOI	https://doi.org/10.1039/F19878300477
Stato di pubblicazione	Pubblicato - 1987
Pubblicato esternamente	Sì

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10.1039/F19878300477

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title = "Adsorption and dissociation of ammonia on the hydroxylated surface of magnesium oxide powders",

abstract = "A systematic infrared study has been performed concerning ammonia adsorption on high-surface-area MgO at successive stages of surface dehydroxylation. Ammonia is mostly held in molecular forms by hydroxyls, Mg2+ cations and O2- anions exposed in low coordination on \{001\} planes. Heterolytic dissociation is also observed not only on fully dehydroxylated but also on hydroxylated samples. This process is monitored by the NH2- absorption at 1555 cm-1.",

author = "Salvatore Coluccia and Silvio Lavagnino and Leonardo Marchese",

year = "1987",

doi = "10.1039/F19878300477",

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journal = "Physical Chemistry Chemical Physics",

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T1 - Adsorption and dissociation of ammonia on the hydroxylated surface of magnesium oxide powders

AU - Coluccia, Salvatore

AU - Lavagnino, Silvio

AU - Marchese, Leonardo

PY - 1987

Y1 - 1987

N2 - A systematic infrared study has been performed concerning ammonia adsorption on high-surface-area MgO at successive stages of surface dehydroxylation. Ammonia is mostly held in molecular forms by hydroxyls, Mg2+ cations and O2- anions exposed in low coordination on {001} planes. Heterolytic dissociation is also observed not only on fully dehydroxylated but also on hydroxylated samples. This process is monitored by the NH2- absorption at 1555 cm-1.

AB - A systematic infrared study has been performed concerning ammonia adsorption on high-surface-area MgO at successive stages of surface dehydroxylation. Ammonia is mostly held in molecular forms by hydroxyls, Mg2+ cations and O2- anions exposed in low coordination on {001} planes. Heterolytic dissociation is also observed not only on fully dehydroxylated but also on hydroxylated samples. This process is monitored by the NH2- absorption at 1555 cm-1.

UR - https://www.scopus.com/pages/publications/33646264483

U2 - 10.1039/F19878300477

DO - 10.1039/F19878300477

M3 - Article

SN - 0300-9599

VL - 83

SP - 477

EP - 486

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 2

ER -

Adsorption and dissociation of ammonia on the hydroxylated surface of magnesium oxide powders

Abstract

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