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Vanillin Hydrodeoxygenation: Kinetic Modelling and Solvent Effect.
- Source :
-
Catalysis Letters . Sep2018, Vol. 148 Issue 9, p2856-2868. 13p. - Publication Year :
- 2018
-
Abstract
- Abstract: Vanillin hydrodeoxygenation was investigated using Pt/C catalyst in the temperature and total pressure ranges of 80-200 °C and 20-30 bar in several solvents, such as tetrahydrofuran, 2-propanol, water and in solventless conditions using 1:1 mass ratio of vanillin to guaiacol. The results revealed that the rate increased with increasing solvent polarity as follows: tetrahydrofuran < 2-propanol < water. The main product was p-creosol with 66% selectivity at complete vanillin conversion in HDO under 30 bar total pressure at 100 °C after 4 h using water as a solvent. In a solventless experiment with 1:1 mass ratio of vanillin-guaiacol as a feedstock only vanillin was transformed to p-creosol with 91% conversion in 4 h at 200 °C under 30 bar total pressure, while guaiacol did not produce any HDO products. Both thermodynamic analysis and kinetic modelling were performed. Vanillin hydrodeoxygenation resulted in formation of p-creosol over Pt/C catalyst using an optimum vanillin initial concentration in water solution. From the industrial point of view vanillin hydrodeoxygenation proceeded rapidly giving high yields of p-creosol in solventless hydrodeoxygenation of vanillin-guaiacol mixture, while guaiacol was not deoxygenated.Graphical Abstract: <graphic></graphic> [ABSTRACT FROM AUTHOR]
- Subjects :
- *DEOXYGENATION
*VANILLIN
*TETRAHYDROFURAN derivatives
*GUAIACOL
*PLANT biomass
Subjects
Details
- Language :
- English
- ISSN :
- 1011372X
- Volume :
- 148
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Catalysis Letters
- Publication Type :
- Academic Journal
- Accession number :
- 131532829
- Full Text :
- https://doi.org/10.1007/s10562-018-2478-1