ISSN 1070-4272, Russian Journal of Applied Chemistry, 2016, Vol. 89, No. 10, pp. 1619−1624. © Pleiades Publishing, Ltd., 2016.
Original Russian Text © G.S. Dmitriev, A.V. Terekhov, L.N. Zanaveskin, S.N. Khadzhiev, K.L. Zanaveskin, A.L. Maksimov,
2016, published in Zhurnal Prikladnoi
Khimii, 2016, Vol. 89, No. 10, pp. 1298−1304.
The interaction of glycerol wit acetone on acid-type
catalysts yields two products: 2,2-dimethyl-4-hydroxy-
methyl-1,3-dioxolane, also named solketal, and 2,2-di-
methyl-1,3-dioxan-5-ol. The amount of the latter in the
reaction products commonly does not exceed 2–3%. The
scheme of the occurring reactions is presented below:
In what follows, the term solketal will mean a mixture
of these two isomers.
Solketal belongs to oxygenates, a group of lower
alcohols and esters used as high-octane components
of motor fuels. Use of oxygenates extends the service
characteristics of fuels and, as a rule, improves their
Glycerol (GL) Acetone (AC)
Choice of a Catalyst and Technological Scheme
for Synthesis of Solketal
G. S. Dmitriev*, A. V. Terekhov, L. N. Zanaveskin, S. N. Khadzhiev,
K. L. Zanaveskin, and A. L. Maksimov
Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences,
Leninskii pr. 29, Moscow,
Received October 27, 2016
Abstract—Results are presented obtained in tests of various homogeneous and heterogeneous catalysts in a
synthesis of solketal (2,2-dimethyl-4-hydroxymethyl-1,3-dioxolane). It is shown that, all other conditions being
the same, the highest catalytic activity is observed for sulfuric acid and beta zeolite. Data are presented on how
the equilibrium constant of the reaction of glycerol ketalization depends on temperature. A technological scheme
of the process for synthesis of solketal is suggested and its description is presented.