Volume 42, Issue 4 pp. 769-773
Research Article

Separation of Trimethyl Borate from a Liquid Mixture by Pervaporation

Jana Gaálová

Jana Gaálová

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

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Lukáš Vojtek

Lukáš Vojtek

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

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Sara Lasnier

Sara Lasnier

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

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Toma Tadic

Toma Tadic

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

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Jan Sýkora

Jan Sýkora

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

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Pavel Izák

Corresponding Author

Pavel Izák

Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic

Correspondence: Pavel Izák ([email protected]), Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 00 Prague, Czech Republic.Search for more papers by this author
First published: 18 January 2019
Citations: 6

Abstract

Four commercial polyvinyl alcohol (PVA) and polydimethylsiloxane (PDMS) membranes were applied to the pervaporation of an azeotropic mixture containing trimethyl borate, a precursor to boronic acids used in Suzuki couplings and a gaseous anti-oxidant in solder flux or brazing. The degree of cross-linking of the chains in the active layer played a crucial role in the membrane process using the membranes PERVAP 4155-80, PERVAP 4155-40 and PERVAP 4155-30. PERVAP 4155-30 reached the best results from all tested membranes; an impressive selectivity with fast permeation was also achieved with the PERVAP 4060 membrane. Methanol preferentially passed through PERVAP 4155-30, but trimethyl borate was favorably pervaporated from the mixture by PERVAP 6040, due to the diverse affinities of the membranes.

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