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Catalytic glycerol hydrogenolysis to 1,3-propanediol in a gas–solid fluidized bed

Mahesh Edake, Marjan Dalil, Mohammad Jaber Darabi Mahboub, Jean-Luc Dubois and Gregory S. Patience

Article (2017)

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Cite this document: Edake, M., Dalil, M., Darabi Mahboub, M. J., Dubois, J.-L. & Patience, G. S. (2017). Catalytic glycerol hydrogenolysis to 1,3-propanediol in a gas–solid fluidized bed. RSC Advances, 7(7), p. 3853-3860. doi:10.1039/c6ra27248g
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Glycerol is a potential feedstock to produce 1,3-propanediol (1,3-PDO), which is a valuable commercial polyester monomer. Here, we report the gas-phase glycerol hydrogenolysis to 1,3-propanediol over Pt/WO3/Al2O3 in a fluidized bed operating above 240 degrees C and at ambient pressure. Fluidized beds are ideal contactors for this reaction because the heat transfer rates are sufficiently high to vaporize glycerol thereby minimizing its combustion and thermal degradation. The yield of 1,3-PDO approached 14% after 2 h at 260 degrees C. The major co-products were 1,2-PDO (18%), 1-propanol (28%) and 2-propanol (15%). In the first step, glycerol may dehydrate to acrolein, followed by rehydration to 3-hydroxypropanal and then hydrogenation to 1,3-PDO. The concentrations of the by-products including acrolein, ethylene glycol, propane, and acetone increased with increasing temperature.

Open Access document in PolyPublie
Subjects: 1800 Génie chimique > 1800 Génie chimique
3600 Chimie inorganique > 3607 Catalyse
Department: Département de génie chimique
Research Center: Non applicable
Funders: Consortium de recherche et d'innovation en bioprocédés industriels au Québec (CRIBIQ), Mitacs
Date Deposited: 06 Dec 2018 12:56
Last Modified: 08 Apr 2021 10:43
PolyPublie URL: https://publications.polymtl.ca/3539/
Document issued by the official publisher
Journal Title: RSC Advances (vol. 7, no. 7)
Publisher: The Royal Society of Chemistry
Official URL: https://doi.org/10.1039/c6ra27248g


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