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

Salvatore Coluccia, Silvio Lavagnino, Leonardo Marchese

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer 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 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.

Lingua originaleInglese
pagine (da-a)477-486
Numero di pagine10
RivistaPhysical Chemistry Chemical Physics
Volume83
Numero di pubblicazione2
DOI
Stato di pubblicazionePubblicato - 1987
Pubblicato esternamente

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