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This paper reports the optimization of process factors using the Taguchi method towards the conversion of acetic acid and ethanol yield during the hydrogenation of acetic acid over 4% Pt/TiO2. The acidity of 4% Pt/TiO2 was characterized using NH3-Temperature Programmed Desorption analysis (NH3-TPD). Afterwards, the effect of temperature on the hydrogenation of acetic acid as an individual feed was investigated. The reaction space explored in the following ranges: temperature 80-200 °C, pressure 10-40 bar, time 1-4 h, catalyst 0.1-0.4 g and stirring speed 400-1000 min−1 using 4% Pt/TiO2, was investigated for the optimization study, while the effect of temperature was studied in a temperature range of 145 to 200 °C. NH3-TPD analysis reveals that moderate acidity was suitable for the hydrogenation of acetic acid to ethanol. It was also found that 200 °C, 40 bar, 4 h, 0.4 g and 1000 min−1 for acetic acid conversion, and 160 °C, 40 bar, 4 h, 0.4 g and 1000 min−1 were the optimum conditions for ethanol production. In addition, the selectivity of ethanol was favored at lower temperatures which decreases with increasing temperature.
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This paper reports the optimization of process factors using the Taguchi method towards the conversion of acetic acid and ethanol yield during the hydrogenation of acetic acid over 4% Pt/TiO2. The acidity of 4% Pt/TiO2 was characterized using NH3-Temperature Programmed Desorption analysis (NH3-TPD). Afterwards, the effect of temperature on the hydrogenation of acetic acid as an individual feed was investigated. The reaction space explored in the following ranges: temperature 80-200 °C, pressure 10-40 bar, time 1-4 h, catalyst 0.1-0.4 g and stirring speed 400-1000 min−1 using 4% Pt/TiO2, was investigated for the optimization study, while the effect of temperature was studied in a temperature range of 145 to 200 °C. NH3-TPD analysis reveals that moderate acidity was suitable for the hydrogenation of acetic acid to ethanol. It was also found that 200 °C, 40 bar, 4 h, 0.4 g and 1000 min−1 for acetic acid conversion, and 160 °C, 40 bar, 4 h, 0.4 g and 1000 min−1 were the optimum conditions for ethanol production. In addition, the selectivity of ethanol was favored at lower temperatures which decreases with increasing temperature.

Optimization of process factors using the Taguchi method of DOE towards the hydrodeoxygenation of acetic acid

Department of Pure and Industrial Chemistry

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

This paper reports the optimization of process factors using the Taguchi method towards the conversion of acetic acid and ethanol yield during the...

Optimization of process factors using the Taguchi method of DOE towards the hydrodeoxygenation of acetic acid

Published Online: Sep 18, 2020

Page range: 38 - 43

Received: Apr 02, 2020

Accepted: May 22, 2020

DOI: https://doi.org/10.2478/auoc-2020-0008

Keywords
hydrodeoxygenation, optimization, Taguchi method

© 2020 Ahmed Lawal Mashi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Optimization of process factors using the Taguchi method of DOE towards the hydrodeoxygenation of acetic acid

Published Online: Sep 18, 2020

Page range: 38 - 43

Received: Apr 02, 2020

Accepted: May 22, 2020

DOI: https://doi.org/10.2478/auoc-2020-0008

Keywordshydrodeoxygenation, optimization, Taguchi method

© 2020 Ahmed Lawal Mashi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
hydrodeoxygenation, optimization, Taguchi method