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Oscillations of methane oxidation over metallic nickel surfaces

Oscillations of methane oxidation over metallic nickel surfaces
Oscillations of methane oxidation over metallic nickel surfaces
The oscillatory behavior of the reaction of partial oxidation of methane has been investigated over metallic nickel surfaces. It was found that the chemical compositions and the reaction temperature within the reactor exhibited regular oscillations over a range of reactor temperatures between 710 and 930 °C with different feed gas compositions at flow rate ratios (Ar/CH4/O2) ranging from 30:29:1 to 30:12:18 cm3 min?1. When the reactor temperature increased, the oscillation frequency increased showing indicative correlations, while the amplitude decreased with the rise in system temperature. Varying feed gas composition resulted in complex changes in oscillatory waveforms, frequencies, amplitudes, and product selectivities. The oscillation was attributed to the cyclic reduction and oxidation of the nickel surface under the reaction conditions.
1878-5190
245-252
Tang, Xuan
f9b9a58c-86c1-4c1d-8050-524245ecc16b
Nan, Yefei
42a4adab-3f3f-430e-b981-fa552f6fff31
Huang, Fenglin
681711e7-49ce-4be9-a54f-dbe115a275d7
Zhang, Xunli
d7cf1181-3276-4da1-9150-e212b333abb1
Tang, Xuan
f9b9a58c-86c1-4c1d-8050-524245ecc16b
Nan, Yefei
42a4adab-3f3f-430e-b981-fa552f6fff31
Huang, Fenglin
681711e7-49ce-4be9-a54f-dbe115a275d7
Zhang, Xunli
d7cf1181-3276-4da1-9150-e212b333abb1

Tang, Xuan, Nan, Yefei, Huang, Fenglin and Zhang, Xunli (2012) Oscillations of methane oxidation over metallic nickel surfaces. Reaction Kinetics, Mechanisms and Catalysis, 107 (1), 245-252. (doi:10.1007/s11144-012-0461-1).

Record type: Article

Abstract

The oscillatory behavior of the reaction of partial oxidation of methane has been investigated over metallic nickel surfaces. It was found that the chemical compositions and the reaction temperature within the reactor exhibited regular oscillations over a range of reactor temperatures between 710 and 930 °C with different feed gas compositions at flow rate ratios (Ar/CH4/O2) ranging from 30:29:1 to 30:12:18 cm3 min?1. When the reactor temperature increased, the oscillation frequency increased showing indicative correlations, while the amplitude decreased with the rise in system temperature. Varying feed gas composition resulted in complex changes in oscillatory waveforms, frequencies, amplitudes, and product selectivities. The oscillation was attributed to the cyclic reduction and oxidation of the nickel surface under the reaction conditions.

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More information

Published date: 2012
Organisations: Bioengineering Group

Identifiers

Local EPrints ID: 346518
URI: https://eprints.soton.ac.uk/id/eprint/346518
ISSN: 1878-5190
PURE UUID: ba57bdb6-b35c-4075-9ffe-a308b6d8c3e7

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Date deposited: 08 Jan 2013 10:27
Last modified: 16 Jul 2019 21:47

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