Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst
In this work, the catalytic upgrading of a bio-oil model compound via esterification with ethanol was studied using 12-tungstosilicic acid as the catalyst. The response surface method was used to investigate and optimize the process variables, which include the ethanol to acid molar ratio, catalyst...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-11-01
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| Series: | Energy Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484719308285 |
| _version_ | 1818721081061539840 |
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| author | Prapaporn Prasertpong Chawannat Jaroenkhasemmeesuk John R. Regalbuto Jeremiah Lipp Nakorn Tippayawong |
| author_facet | Prapaporn Prasertpong Chawannat Jaroenkhasemmeesuk John R. Regalbuto Jeremiah Lipp Nakorn Tippayawong |
| author_sort | Prapaporn Prasertpong |
| collection | DOAJ |
| description | In this work, the catalytic upgrading of a bio-oil model compound via esterification with ethanol was studied using 12-tungstosilicic acid as the catalyst. The response surface method was used to investigate and optimize the process variables, which include the ethanol to acid molar ratio, catalyst loading, reaction temperature, and reaction time for maximum conversion of the organic acid for esterification under atmospheric conditions. The effect of high He pressure on acid conversion for esterification was also studied. The maximum acid conversion was almost 90%, which can be achieved at reaction temperature of 77 °C, ethanol to acid molar ratio of 5:1, catalyst loading of 4.0% w/w, and reaction time of 8.3 h. Pressurizing the reaction with inert He did not have any effect for acid conversion at this optimum condition and had a slight negative effect under the studied conditions. After upgrading, the esterified products were found to improve the heating value from 17.6 to 23.2 MJ/kg and appeared to enhance fuel properties. |
| first_indexed | 2024-12-17T20:33:03Z |
| format | Article |
| id | doaj.art-48f7b62c40ac475aaabf02c09bf7be33 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-17T20:33:03Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-48f7b62c40ac475aaabf02c09bf7be332022-12-21T21:33:31ZengElsevierEnergy Reports2352-48472020-11-01619Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalystPrapaporn Prasertpong0Chawannat Jaroenkhasemmeesuk1John R. Regalbuto2Jeremiah Lipp3Nakorn Tippayawong4Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, ThailandDepartment of Mechanical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom, 73170, ThailandDepartment of Chemical Engineering, University of South Carolina, Columbia, SC, 29201, United StatesDepartment of Chemical Engineering, University of South Carolina, Columbia, SC, 29201, United StatesDepartment of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai, 50200, Thailand; Corresponding author.In this work, the catalytic upgrading of a bio-oil model compound via esterification with ethanol was studied using 12-tungstosilicic acid as the catalyst. The response surface method was used to investigate and optimize the process variables, which include the ethanol to acid molar ratio, catalyst loading, reaction temperature, and reaction time for maximum conversion of the organic acid for esterification under atmospheric conditions. The effect of high He pressure on acid conversion for esterification was also studied. The maximum acid conversion was almost 90%, which can be achieved at reaction temperature of 77 °C, ethanol to acid molar ratio of 5:1, catalyst loading of 4.0% w/w, and reaction time of 8.3 h. Pressurizing the reaction with inert He did not have any effect for acid conversion at this optimum condition and had a slight negative effect under the studied conditions. After upgrading, the esterified products were found to improve the heating value from 17.6 to 23.2 MJ/kg and appeared to enhance fuel properties.http://www.sciencedirect.com/science/article/pii/S2352484719308285BiomassCatalytic upgradingDesign of experimentsPyrolysis oilRenewable energy |
| spellingShingle | Prapaporn Prasertpong Chawannat Jaroenkhasemmeesuk John R. Regalbuto Jeremiah Lipp Nakorn Tippayawong Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst Energy Reports Biomass Catalytic upgrading Design of experiments Pyrolysis oil Renewable energy |
| title | Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst |
| title_full | Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst |
| title_fullStr | Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst |
| title_full_unstemmed | Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst |
| title_short | Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst |
| title_sort | optimization of process variables for esterification of bio oil model compounds by a heteropolyacid catalyst |
| topic | Biomass Catalytic upgrading Design of experiments Pyrolysis oil Renewable energy |
| url | http://www.sciencedirect.com/science/article/pii/S2352484719308285 |
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