Infra-Red Study of the Adsorption of Ammonia on MgO: Part 2.—The Hydrated Surface
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Date
1972
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Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (2)
Abstract
Ammonia is weakly adsorbed on hydrated MgO by hydrogen-bonding of the nitrogen to hydroxyl groups exposed on the surface and a strong band at 3045 cm-1 is attributed to surface hydroxyl groups perturbed by the adsorbed ammonia. A rapid isotopic exchange is evident when ND3 is adsorbed; a band ascribed to the symmetric bending frequency is observed at 1137 cm-1 for adsorbed NH3, and two bands at 945 and 860 cm-1 observed when ND3 is adsorbed arc assigned to NHD2 and NDj respectively. All traces of ammonia can be removed by evacuation at room temperature.
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Keywords
Chemistry, Infra-Red Study, Ammonia, MgO, Hydrated Surface, Journal of the Chemical Society : Faraday Transaction - I