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Seghers S, Lefevere J, Mullens S, et al. Enhancing Zeolite Performance by Catalyst Shaping in a Mesoscale Continuous-Flow Diels-Alder Process. ChemSusChem. 2018;11(10):1686-1693doi: 10.1002/cssc.201800362.
Seghers, S., Lefevere, J., Mullens, S., De Vylder, A., Thybaut, J. W., & Stevens, C. V. (2018). Enhancing Zeolite Performance by Catalyst Shaping in a Mesoscale Continuous-Flow Diels-Alder Process. ChemSusChem, 11(10), 1686-1693. https://doi.org/10.1002/cssc.201800362
Seghers, Sofie, et al. "Enhancing Zeolite Performance by Catalyst Shaping in a Mesoscale Continuous-Flow Diels-Alder Process." ChemSusChem vol. 11,10 (2018): 1686-1693. doi: https://doi.org/10.1002/cssc.201800362
Seghers S, Lefevere J, Mullens S, De Vylder A, Thybaut JW, Stevens CV. Enhancing Zeolite Performance by Catalyst Shaping in a Mesoscale Continuous-Flow Diels-Alder Process. ChemSusChem. 2018 May 25;11(10):1686-1693. doi: 10.1002/cssc.201800362. Epub 2018 Apr 26. PMID: 29577662.
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ChemSusChem. 2018 May 25;11(10):1686-1693. doi: 10.1002/cssc.201800362. Epub 2018 Apr 26.

Enhancing Zeolite Performance by Catalyst Shaping in a Mesoscale Continuous-Flow Diels-Alder Process.

ChemSusChem

Sofie Seghers, Jasper Lefevere, Steven Mullens, Anton De Vylder, Joris W Thybaut, Christian V Stevens

Affiliations

  1. Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium.
  2. Vlaamse Instelling voor Technologisch Onderzoek (VITO), Boeretang 200, 2400, Mol, Belgium.
  3. Department of Materials, Textiles, and Chemical Engineering, Faculty of Engineering and Architecture, Ghent University, Technologiepark 914, 9052, Ghent, Belgium.

PMID: 29577662 DOI: 10.1002/cssc.201800362

Abstract

In contrast to most lab-scale batch procedures, a continuous-flow implementation requires a thorough consideration of the solid catalyst design. In a previous study, irregular zeolite pellets were applied in a miniaturized continuous-flow reactor for the Diels-Alder reaction in the construction of norbornene scaffolds. After having faced the challenges of continuous operation, the aim of this study is to exploit catalyst structuring. To this end, microspheres with high uniformity and various sphere diameters were synthesized according to the vibrational droplet coagulation method. The influence of the use of these novel zeolite shapes in a mesoscale continuous-flow Diels-Alder process of cyclopentadiene and methyl acrylate is discussed. An impressive enhancement of catalyst lifetime is demonstrated, as even after a doubled process time of 14 h, the microspheres still exceeded the conversion after 7 h when using zeolite pellets by 30 %. A dual reason is found for this beneficial impact of catalyst shaping. The significant improvement in catalyst longevity can be attributed to the interplay of the chemical composition and the porosity structure of the microspheres.

© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: Diels-Alder reaction; flow chemistry; heterogeneous catalysis; microreactor; zeolites

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