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dc.contributor.authorGalwey, A. K.-
dc.date.accessioned2025-02-01T06:23:51Z-
dc.date.available2025-02-01T06:23:51Z-
dc.date.issued1972-
dc.identifier.urihttp://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/17008-
dc.description.abstractA kinetic study of the reaction of oxygen with a finely divided, pyrophoric, iron-carbon mixture is reported. At low pressures (<0.2 Torr) of oxygen, chemisorption proceeded to about two mono- layers. Above 0.8 Torr oxygen uptake corresponded to the formation of about nine monolayers of oxide. From kinetic data, and electron micrographs of the reactant we conclude that the rate limiting processes were: (i) in the low pressure range, intercrystalline diffusion of gas to the active surfaces of the metal, and (ii) in the high pressure range, by diffusion across an oxide barrier layer which covered the metal surfaces. Reactions >0.8 Torr were accompanied by self-heating. The activation energy for both oxygen chemisorption reactions was low (<0.5 kJ mol-1, 77-373 K). The surface oxide layer could be reduced through reaction with constituent carbon by heating at 800 K in vacuum. This ability to regenerate the active surface enabled several successive oxidation reactions to be studied on a particular sample of reactant.en_US
dc.language.isoenen_US
dc.publisherJournal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1972, 68 (10)en_US
dc.subjectChemistryen_US
dc.subjectOxidationen_US
dc.subjectKinetic Reactionen_US
dc.subjectJournal of the Chemical Society : Faraday Transaction - Ien_US
dc.titleOxidation of a Pyrophoric Iron Part 1.—Kinetics of Chemisorption of Oxygen on the finely divided Iron-Carbon Substrateen_US
dc.typeArticleen_US
Appears in Collections:Journal Articles (before-1995)

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