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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/49597
Title: Optimization of process variables for esterification of bio-oil model compounds by a heteropolyacid catalyst
Authors: Prapaporn Prasertpong
Chawannat Jaroenkhasemmeesuk
John R. Regalbuto
Jeremiah Lipp
Nakorn Tippayawong
University of South Carolina
Mahidol University
Chiang Mai University
Keywords: Energy
Issue Date: 1-Nov-2020
Citation: Energy Reports. Vol.6, (2020), 1-9
Abstract: © 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.
URI: http://repository.li.mahidol.ac.th/dspace/handle/123456789/49597
metadata.dc.identifier.url: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85075485685&origin=inward
ISSN: 23524847
Appears in Collections:Scopus 2020

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