Ramli, N. A. S. and Amin, N. A. S. (2016) Kinetic study of glucose conversion to levulinic acid over Fe/HY zeolite catalyst. Chemical Engineering Journal, 283 . pp. 150-159. ISSN 1385-8947
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Abstract
The glucose conversion using Fe/HY zeolite catalyst in a batch reactor has been investigated. The main products within the temperature range between 120 and 200°C were 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA). The highest LA yield of 66% was obtained from 100% glucose conversion at 180°C. After eliminating the influence of internal and external diffusions, a kinetic model was developed based on the pseudo homogeneous model. The kinetic model consisted of four key steps: (1) glucose dehydration to form 5-HMF; (2) glucose degradation to produce humins; (3) 5-HMF rehydration to form LA; and (4) 5-HMF degradation to form humins. The first-order model and the experimental data fitted-well. The reactions rates increased with temperature, and the activation energies of glucose conversion to 5-HMF and 5-HMF conversion to LA were 64 and 61kJmol-1, respectively, comparatively lower than previously reported values.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Activation energy, Batch reactors, Catalysts, Kinetic parameters, Kinetic theory, Kinetics, Organic acids, 5 hydroxymethyl furfurals, First-order models, Glucose conversion, Glucose degradation, Kinetic study, Levulinic acid, Pseudo-homogeneous modeling, Temperature range, Glucose |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Chemical Engineering |
| ID Code: | 74453 |
| Deposited By: | Fazli Masari |
| Deposited On: | 29 Nov 2017 23:58 |
| Last Modified: | 29 Nov 2017 23:58 |
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