Conversion of levoglucosan to glucose using an Choar tor acidic heterogeneous Amberlyst 16 catalyst: Kinetics and packed bed measurementsAbdilla-Santes, R. M., Rasrendra, C. B., Winkelman, J. G. M. & Heeres, H. J., Dec-2019, In : Chemical Engineering Research & Design. 152, p. 193-200 8 p.
Research output: Contribution to journal › Article › Academic › peer-review
Levoglucosan (1,6-anhydro-beta-D-glucopyranose) is an anhydrosugar found in significant amounts in pyrolysis liquids obtained from lignocellulosic biomass. Levoglucosan (LG) is an attractive source for glucose (GLC), which can be used as a feedstock for biofuels (e.g. bioethanol) and biobased chemicals. Here, we report a kinetic study on the conversion of LG to GLC in water using Amberlyst 16 as the solid acid catalyst at a wide range of conditions in a batch set-up. The effects of the reaction temperature (352-388 K), initial LG intake (100-1000 mol m(-3)), catalyst loading (1-5 wt%), and stirring rate (250-1000 rpm) were determined. The highest GLC yield was 98.5 mol% (388 K, 5 wt% Amberlyst 16, C-LG,C-0 = 500 mol m(-3) at 500 rpm stirring rate and t = 60 min). The experimental data were modelled and relevant kinetic parameters were determined using a first order approach including diffusion limitations of LG inside the Amberlyst particles. Good agreement between experiments and kinetic model was obtained. The activation energy was found to be 132.3 +/- 10.1 kJ mol(-1). Experiments in a continuous packed bed set-up for up to 30 h show that catalyst stability is good. In addition, the steady state LG conversion (73 mol%) and the GLC selectivity were in line with the kinetic model obtained in the batch reactor. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
|Number of pages||8|
|Journal||Chemical Engineering Research & Design|
|Publication status||Published - Dec-2019|
- Levoglucosan, Pyrolysis, Glucose, Amberlyst 16, Kinetic model, PYROLYSIS BIO-OIL, HYDROLYSIS, BIOMASS, SEPARATION, FRACTION, SUGARS, MODEL