Investigation of H2S oxidation by oxygen on oxide catalysts in sulfur condensation conditions |
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| Authors: | O. N. Kovalenko N. N. Kundo V. M. Novopashina V. M. Khanaev |
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| Affiliation: | (1) Boreskov Institute of Catalysis, 630090 Novosibirsk, Russia |
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| Abstract: | H2S oxidation with oxygen has been studied on three industrial oxide catalysts (Fe−Cr−Zn, Cu−Cr−Al, V−Ti−Al). Thermodynamically possible changes in the composition of the catalysts have been evaluated. Regularities determining deep or partial oxidation of H2S have been found. Deep oxidation is connected to the presence of active oxygen on the catalyst surface; its removal results in a decrease of activity and increase of the sulfur selectivity. Oscillations caused by periodic adsorption-desorption of sulfur on the catalyst surface have been observed on the most active V−Ti−Al catalysts in oxygen excess. |
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| Keywords: | H2S oxidation oxygen oxide catalysts catalytic activity oscillations |
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