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    Infra-red Study of the Reactions between Ethyl Isocyanate and the Surface of Magnesium Oxide
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1974, 70 (1-6), 1974) Eley, Daniel D.; Kiwanuka, Gerald M.; Rochester, Colin H.
    Ethyl isocyanate reacts at 306 K with isolated hydroxyl groups on the surface of magnesium oxide to form a urethane. The adsorption reaction is reversed by evacuation at high temperatures. Adjacent interacting hydroxyl groups and molecular water on magnesium oxide react with ethyl isocyanate to give 1,3-diethylurea which is adsorbed on the oxide as a perturbed “carboxylate-type complex” and carbon dioxide which with water gives a surface bicarbonate species. The 1,3-diethylurea complex decomposes to surface ethyl magnesium carbonate on evacuation at elevated temperatures. The latter species is also formed when ethyl isocyanate reacts with the surface of magnesium oxide at 673 K. Other products of the high temperature reaction include cyanide and isocyanate groups as ligands of surface magnesium ions, adsorbed carbonate ions, and products of the polymerization reactions of ethyl isocyanate, isocyanic acid, and hydrogen cyanide.
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    Infra-red Study of Nitric Oxide Adsorption on Magnesium Oxide
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1974, 70 (1-6), 1974) Cerruti, Luigi; Modone, Eros; Guglielminotti, Eugenio
    An i.r. study of nitric oxide adsorption on high area MgO (previously degassed at 800°C) at room temperature is reported. The adsorption of NO onto MgO produces i.r. bands at 800–900 cm–1, 1100–1250 cm–1, and 1350–1450 cm–1. These absorption bands were assigned to several surface species: NO–2 ions with various configurations and NO– and N2O2–2 ions, co-ordinated to Mg2+ ions. The adsorption (3.3 × 1013 molecule cm–2, at 10.4 × 103 N m–2 of NO) occurs in limited surface zones.
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    Infra-red study of the surface properties of rutile: Deuterium exchange, carbon dioxide and but-1-ene adsorption
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (5), 1972) Jackson, P.; Parfitt, G. D.
    Deuterium exchange with surface hydroxyl groups on rutile was studied using D2 and D2O; the former completely exchanges at 300°C (2 h) with evidence for surface reduction, while the latter does not achieve complete exchange with the saturated vapour at room temperature. The shift in infra-red frequencies on deuteration verified previous assignments of surface species as being hydrogenic and also indicated the physical inaccessibility of certain species. Adsorption of CO2 produced a labile bicarbonate species and indicates the separate chemical identity of the two surface hydroxyl species represented by peaks at 3700 and 3670 cm–1. But-1-ene interacts with the rutile surface at 150°C with formation of surface alkoxide, and indicates the presence of inaccessible surface groups, but gives no evidence for preferential reaction by one of the hydroxyl groups.
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    Infra-red Study of the Surface Properties of Rutile: Adsorption of Ethanol, n-Butanol and n-Hexanol
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (8), 1972) Jackson, P; Parfitt, G D
    The vapours of ethanol, n-butanol and n-hexanol chemisorb at room temperature on a variety of rutile surfaces. The adsorption is independent of the nature of the surface, and an estimate of the ethoxide population is 3 groups/nm2. Thermal decomposition of all three alkoxides was complete at 300°C producing surface carbonate species, with water and the respective alk-1-ene in the gas phase. A mechanism is proposed for the formation of the alk-1-ene.