Oxygen isotope exchange on Pt(100) monocrystal
作者： V.I. Sobolev , V.A. Sobyanin , A.V. Pashis , A.V. Kalinkin , G.I. Panov
DOI: 10.1016/0039-6028(86)90205-0
关键词: Physical chemistry 、 Kinetic energy 、 Order of reaction 、 Atmospheric temperature range 、 Activation energy 、 Pressure range 、 Oxygen 、 Chemistry 、 Kinetics 、 Isotopes of oxygen
摘要: Abstract The kinetics of homomolecular oxygen exchange on Pt(100) monocrystal has been studied over the temperature range 653–800 K and pressure 2–100 Pa. Two regions reaction occurrence, which drastically differ in kinetic parameters, have identified. In region I (high temperature, low pressure), activation energy, E, is 185 ± 20 kJ/mol order with respect to oxygen, n, 0 0.1. II (low high E = 75 10 n 0.6 dependence points reversible transition O2 when passing from one other conformity diagram surface phase found for adsorption by Griffiths co-workers [Surface Sci. 138 (1984) 113].
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