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Microwave-assisted synthesis of solketal from glycerol and acetone
https://doi.org/10.18412/1816-0387-2024-1-60-68
Abstract
Herein, microwave-assisted synthesis of solketal from glycerol and acetone in the presence of montmorillonite modified with aqueous solution of 0.25 mol/l HCl (0.25M HCl/MM) was demonstrated. The reaction was studied in a methanol solution at an acetone/glycerol molar ratio of 2.45–7.53, a catalyst concentration of 1.2–2.8 wt.% (based on the mass of loaded glycerol), and 30–56 °C. Solketal was shown to be the major product with 96.1–99.2 % selectivity. The maximum solketal yield of 91.3 % with 98.6 % selectivity was obtained in 15 min of the reaction at an acetone/glycerol molar ratio of 7.53, a catalyst loading of 2.3 wt.% and 56 °C. The catalytic properties of 0.25M HCl/MM in the reaction under MW heating and thermal conventional heating were compared. It was found that the yield of solketal in the MW-assisted synthesis is 2 times higher compared to the process with conventional heating.
About the Authors
V. A. Bolotov
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
A. E. Kibilyuk
Novosibirsk State Technical University, Novosibirsk
Russian Federation
Russian Federation
V. N. Parmon
Boreskov Institute of Catalysis SB RAS, Novosibirsk
Russian Federation
Russian Federation
V. N. Panchenko
Boreskov Institute of Catalysis SB RAS, Novosibirsk; Novosibirsk State Technical University, Novosibirsk
Russian Federation
Russian Federation
M. N. Timofeeva
Boreskov Institute of Catalysis SB RAS, Novosibirsk; Novosibirsk State Technical University, Novosibirsk
Russian Federation
Russian Federation
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Review
For citations:
Bolotov V.A., Kibilyuk A.E., Parmon V.N., Panchenko V.N., Timofeeva M.N. Microwave-assisted synthesis of solketal from glycerol and acetone. Kataliz v promyshlennosti. 2024;24(1):60-68. (In Russ.) https://doi.org/10.18412/1816-0387-2024-1-60-68
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