A comparative study of water-immiscible organic solvents in the production of furfural from xylose and birch hydrolysate

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2019-04-25
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
354-363
Series
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, Volume 72
Abstract
Furfural (FUR) was produced from xylose using a biphasic batch reaction system. Water-immiscible organic solvents such as isophorone, 2-methyltetrahydrofuran (2-MTHF) and cyclopentyl methyl ether (CPME) were used to promptly extract FUR from the aqueous phase in order to avoid the degradation to humins as largely as possible. The effect of time, temperature, organic solvent and organic-to-aqueous ratio on xylose conversion and FUR yield were investigated in auto-catalyzed conditions. Experiments at three temperatures (170, 190 and 210 °C) were carried out in a stirred microwave-assisted batch reactor, which established the optimal conditions for achieving the highest FUR yield. The maximum FUR yields from xylose were 78 mol% when using CPME, 48 mol% using isophorone and 71 mol% in the case of 2-MTHF at an aqueous to organic phase ratio of 1:1 (v/v). Birch hydrolysate was also used to show the high furfural yield that can be obtained in the biphasic system under optimized conditions. The present study suggests that CPME can be used as a green and efficient extraction solvent for the conversion of xylose into furfural without salt addition.
Description
Keywords
xylose, furfural, prehydrolyzate liquor, 2-MTHF, CPME, isophorone, Xylose, Furfural, Isophorone, Prehydrolysate liquor
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Citation
Gómez Millán, G, Hellsten, S, King, A W T, Pokki, J-P, Llorca, J & Sixta, H 2019, ' A comparative study of water-immiscible organic solvents in the production of furfural from xylose and birch hydrolysate ', JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol. 72, pp. 354-363 . https://doi.org/10.1016/j.jiec.2018.12.037