Hydrothermal upgrading of biomass to biofuel; studies on some monosaccharide model compounds

Carbohydrate Research
Zbigniew SrokolJoop A Peters

Abstract

During the hydrothermal upgrading of biomass, hydrolysis to glucose is an important step. To elucidate some of the reaction pathways that follow this initial hydrolysis, the hydrothermal treatment (340 degrees C, 27.5 MPa, 25-204 s) of dilute (50 mM) solutions of D-glucose and some other monosaccharides were studied. As a result of the increase of Kw under subcritical conditions, both acid and base catalysed reactions occur. The acid catalysed reactions are mainly dehydrations leading initially to 5-hydroxymethylfurfural. Important base catalysed reactions result in glycolaldehyde and glyceraldehyde. Further fragmentations and dehydrations lead to a variety of low molecular weight compounds such as formic acid, acetic acid, lactic acid, acrylic acid, 2-furaldehyde and 1,2,4-benzenetriol. Important pathways leading to a decrease of the O-content of the liquid reaction products start from the intermediate glyceraldehyde, which forms pyruvaldehyde, which in its turn is converted into formic acid and acetaldehyde. The latter compound can also be formed via isomerisation of glyceraldehyde into lactic acid followed by decarbonylation.

Citations

May 23, 2014·Bioresource Technology·Chao MiaoShulin Chen
Jul 20, 2014·Carbohydrate Polymers·R J ChimentãoF López
Mar 27, 2018·Chemistry : a European Journal·Jan Willem StratenSaskia Heumann
Aug 4, 2010·Angewandte Chemie·Todsapon Thananatthanachon, Thomas B Rauchfuss
Aug 25, 2010·ChemSusChem·Todsapon Thananatthanachon, Thomas B Rauchfuss
Jun 29, 2018·Acta Crystallographica. Section E, Crystallographic Communications·Zane ClarkeMichela I Simone
Sep 15, 2015·ChemSusChem·Marcos Henrique Luciano SilveiraLuiz Pereira Ramos
Jan 13, 2021·Environmental Science & Technology·Jamison WatsonYuanhui Zhang
Apr 25, 2021·Chemosphere·Mojtaba Hedayati MarzbaliKalpit Shah
Nov 11, 2011·The Journal of Physical Chemistry. a·Hiroshi KimuraNobuyuki Matubayasi
Apr 3, 2018·ACS Sustainable Chemistry & Engineering·Angela J KumalaputriPeter J Deuss
Jul 16, 2020·Chemical Reviews·Romaric GérardyJean-Christophe M Monbaliu
Feb 19, 2019·Organic Process Research & Development·Caelan RandolphPeter J Deuss
May 21, 2018·ACS Omega·Suhas H Shinde, Chandrashekhar V Rode

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