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Title
Levoglucosan transformation over aluminosilicates
Authors
M. Kaldstrom N. Kumar T. Salmi and D. Yu. Murzin
Received
November 19, 2009
Published
Volume 44 Issue 4-6 April-June
Keywords
levoglucosan, glucose, glycolaldehyde, Beta-25, MCM-48
Abstract
Catalytic transformation of levoglucosan (1-6-anhydro-?-D-glucopyranose) was carried out in the liquid phase in the batch mode, at 20 bar and 150 °C, and in the continuous mode, at 300 °C and at atmospheric pressure over aluminum silicates. Proton forms of Beta-25 zeolite and MCM-48 mesoporous material were tested as catalysts, while quartz sand was used as a reference material in non-catalytic transformation experiments. Levoglucosan conversion varied with residence time and catalyst. A variety of products was detected with HPLC, GC and GC-MS. The yields of the main products, e.g. different oxygenated species (glucose, glycolaldehyde, formaldehyde, acetaldehyde and acetic acid) varied, as a function of conversion, residence time and zeolite structure.
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