3 years ago

Continuous 5-Hydroxymethylfurfural Production from Monosaccharides in a Microreactor

Continuous 5-Hydroxymethylfurfural Production from Monosaccharides in a Microreactor
Rie Masaki, Hiroyuki Nakagawa, Kazuhiro Mae, Taisuke Maki, Yosuke Muranaka
5-Hydroxymethylfurfural (HMF) was effectively produced from monosaccharides in a microreactor. A biphasic reaction system was employed to achieve the immediate extraction of produced HMF and suppress the overreaction. A microreactor was utilized to ensure that the reaction occurred under segmented flow to enhance the extraction efficiency. Through many attempts using phosphate buffer saline (PBS) as the reaction phase and 2-sec-butyl phenol (2BP) as the extraction phase, the favorable conditions were determined. By using PBS with pH of 2.0 and 2BP at a volume ratio of 3 to PBS, 80.9 mol % of fructose and 75.7 mol % of glucose were converted into HMF, respectively, at 180 °C. By comparing the results obtained through monophasic reactions, it was confirmed that the biphasic system successfully suppressed both the overreaction and the byproducts. The system employed only a simple experimental apparatus and the acid solution and organic solvent reagents without any complex expensive catalyst.

Publisher URL: http://dx.doi.org/10.1021/acs.iecr.7b02017

DOI: 10.1021/acs.iecr.7b02017

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