Hydrolysis and glycosidation of sugars during the esterification of fast pyrolysis bio-oil
|dc.identifier.citation||Gunawan, R. and Li, X. and Larcher, A. and Hu, X. and Mourant, D. and Chaiwat, W. and Wu, H. et al. 2012. Hydrolysis and glycosidation of sugars during the esterification of fast pyrolysis bio-oil. Fuel. 95: pp. 146-151.|
Acid-catalysed esterification converts organic acids in bio-oil into useful esters. However, the conditions to carry out esterification also promote the hydrolysis of anhydro-sugars in bio-oil. This paper reports the hydrolysis and glycosidation of sugars during the esterification of bio-oil using Amberlyst-70 solid acid catalyst at 70–170 _C. The bio-oil was prepared from the fast pyrolysis of mallee biomass in a fluidised- bed reactor. Our results show that sugar oligomers and levoglucosan in bio-oil can be hydrolysed to form D-glucose, which further reacts with methanol to form methyl-a-D-glucopyranoside, concurrently with the esterification of acids (e.g. formic, acetic and propionic acids) in bio-oil. The effects of other important parameters such as catalyst loading and methanol to bio-oil ratio on the hydrolysis-glycosidation of sugar compounds present in bio-oil are also reported.
|dc.publisher||Elsevier Science Ltd|
|dc.title||Hydrolysis and glycosidation of sugars during the esterification of fast pyrolysis bio-oil|
|curtin.department||Department of Chemical Engineering|
|curtin.accessStatus||Fulltext not available|