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

Research output: Contribution to journal › Article › 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.

Original language	English
Pages (from-to)	477-486
Number of pages	10
Journal	Physical Chemistry Chemical Physics
Volume	83
Issue number	2
DOIs	https://doi.org/10.1039/F19878300477
Publication status	Published - 1987
Externally published	Yes

Access to Document

10.1039/F19878300477

Cite this

@article{929b2b5bba71426c833434b48a3eff62,

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",

language = "English",

volume = "83",

pages = "477--486",

journal = "Physical Chemistry Chemical Physics",

issn = "0300-9599",

publisher = "Royal Society of Chemistry",

number = "2",

}

TY - JOUR

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

Access to Document

Other files and links

Fingerprint

Cite this