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Ru–C–ZnO Composite Catalysts for the Synthesis of Methyl Isobutyl Ketone via Single Step Gas Phase Acetone Self-Condensation

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Abstract

Ruthenium/activated charcoal (Ru–C) was modified by a solid–solid interaction method with synthesized nano-zinc oxide (n-ZnO). Three different ratios of Ru–C:n-ZnO (1:2, 1:1 and 3:2) were used to prepare Ru–C–ZnO composite catalysts. These were used in the gas-phase, one-step self-condensation of acetone to methyl isobutyl ketone (MIBK). The composite catalyst (1:1 ratio) contained 2.5 wt% Ru showed superior conversion of acetone and selectivity for MIBK. Furthermore, this catalyst showed good consistency for MIBK formation for 100 h without any deactivation. Characterization of the catalysts revealed that balanced hydrogenation and acid–base functional character is crucial to obtain high catalytic performance.

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Acknowledgments

The authors are grateful to Felicity Sartain, Bio-Nano Ltd., UK for her support in revising English, W. Schwieger, Alexandra Inyat, Amer Inyat, Hallah Alyousef, Dirk Enk, University of Erlangen-Nuernberg, Germany for their technical support in catalyst characterization, Abdulaziz AL-Ghashem, Muhamad Ashinqiti, Muhamad Ashammeri and Faez Al-Otaibi, King Abdulaziz City for Science and Technology (KACST) for their support in reactor operation. KACST is acknowledged for funding this work under project No. 29-280.

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Correspondence to Abdulaziz A. Bagabas.

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Bagabas, A.A., Mokhtar, M., Akhmedov, V.M. et al. Ru–C–ZnO Composite Catalysts for the Synthesis of Methyl Isobutyl Ketone via Single Step Gas Phase Acetone Self-Condensation. Catal Lett 144, 1278–1288 (2014). https://doi.org/10.1007/s10562-014-1253-1

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  • DOI: https://doi.org/10.1007/s10562-014-1253-1

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