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Partial oxidation of isobutene to methacrolein on Bi-W/Fe-Co-Mo-K catalysts

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Abstract

The partial oxidation of isobutene to methacrolein and methacrylic acid was studied on oxidic catalysts containing mainly a mixture of bismuth tungstate and iron-cobalt-potassium molybdate. Catalyst shaping was done by extrusion. The kinetic measurements were performed by monitoring the gas-phase composition along the length of a fixed bed of catalyst. The reactor was treated as an isothermal plug-flow system. The network of parallel and consecutive reactions taking place in this system can be described by a simplified scheme. It is possible to predict the gas-phase composition prevailing in the reactor using five different kinetic parameters. In the temperature range 380<ν<420°C grain selectivities as high as 85% combined with yields of methacrolein and methacrylic acid about 72% at 92% conversion were obtained.

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Authors and Affiliations

  1. Institut für Chemische Verfahrenstechnik, Universität Karlsruhe (TH), Kaiserstrasse 12, Postfach 6980, 76128, Karlsruhe, Germany

    S. Breiter & H. -G. Lintz

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  1. S. Breiter
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  2. H. -G. Lintz
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Breiter, S., Lintz, H.G. Partial oxidation of isobutene to methacrolein on Bi-W/Fe-Co-Mo-K catalysts. Catal Lett 24, 343–348 (1994). https://doi.org/10.1007/BF00811806

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  • DOI: https://doi.org/10.1007/BF00811806

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