Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst

© 2019 The Authors 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 mol...

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Main Authors: Prapaporn Prasertpong, Chawannat Jaroenkhasemmeesuk, John R. Regalbuto, Jeremiah Lipp, Nakorn Tippayawong
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68364
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-683642020-04-02T15:25:39Z Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst Prapaporn Prasertpong Chawannat Jaroenkhasemmeesuk John R. Regalbuto Jeremiah Lipp Nakorn Tippayawong Energy © 2019 The Authors 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. 2020-04-02T15:25:39Z 2020-04-02T15:25:39Z 2020-11-01 Journal 23524847 2-s2.0-85075485685 10.1016/j.egyr.2019.11.026 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075485685&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68364
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Energy
spellingShingle Energy
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
description © 2019 The Authors 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.
format Journal
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
title 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_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_sort optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075485685&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68364
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