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Self-sustained oscilations of temperature and conversion in a packed bed microreactor during 2-methylpropene (isobutene) hydrogenation
Catalysis Today; Vol. 256; Part 2; 2015; Pages 250-260
- Category: Článek v odborném periodiku (Article in a professional journal)
- Author: Jiřičný Vladimír, Kolena Jiří, Křišťál Jiří, Stavárek Petr, Vajglová Zuzana
- ISSN: 0920-5861
- Year: 2015
- Link: URL
- DOI: 10.1016/j.cattod.2015.04.036
Review
Self-sustained spontaneous and reproducible oscillations of 2-methylpropeneconversion have been observed experimentally under certain conditions. The temperature of the catalystbed well reflected the oscillatory course of 2-methylpropene conversion. The observed oscillations exhib-ited exceptionally long periods ranging from 11 to 22 h depending on the prevailing space velocity. Theappearance of oscillations of the conversion has been ascribed to the complex interaction between theexothermic reaction, heat transfer and a reversible decrease in the catalyst activity. Possible mechanismsof temporary catalyst activity decrease have been proposed.