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dc.contributor.authorWei Dengen_US
dc.contributor.authorKai Xuen_US
dc.contributor.authorZhe Xiongen_US
dc.contributor.authorWeerawut Chaiwaten_US
dc.contributor.authorXuepeng Wangen_US
dc.contributor.authorSheng Suen_US
dc.contributor.authorSong Huen_US
dc.contributor.authorJihua Qiuen_US
dc.contributor.authorYi Wangen_US
dc.contributor.authorJun Xiangen_US
dc.contributor.otherHuazhong University of Science and Technologyen_US
dc.contributor.otherMahidol Universityen_US
dc.identifier.citationEnergy and Fuels. Vol.33, No.11 (2019), 11292-11301en_US
dc.description.abstractCopyright © 2019 American Chemical Society. The electrochemical upgrading of bio-oil is a potential renewable approach toward generating liquid biofuels or industrial chemicals under mild reaction conditions (≤80 °C and ambient pressure). The aromatic structural evolution in bio-oil is a key consideration in bio-oil application. In this study, a bio-oil sample produced from the fast pyrolysis of rice husk at 500 °C and its lignin-derived oligomers were electrolyzed in an electrolytic cell with platinum electrodes. The samples at discrete time intervals were extracted and analyzed using ultraviolet fluorescence spectroscopy, gas chromatography-mass spectrometry, and Fourier transform ion cyclotron resonance-mass spectrometry (FT-ICR MS). Results showed that aromatic compounds with one and two benzene rings decreased with a prolonged processing time. The unsaturated aromatic compounds were hydrogenated and converted into saturated compounds. Species with more than two aromatic rings were the main compounds detected by FT-ICR MS. The lignin-derived oligomers contained the most phenolic compounds with more than two aromatic rings of the bio-oil. However, the evolution of these phenolic compounds showed different trends between the electrolysis of bio-oil and the lignin-derived oligomer fraction. This phenomenon was attributed to the presence of the light components derived from cellulose/hemicellulose species in the bio-oil. These species were reactive and able to produce radicals that enhanced the hydrogenation reactions. Accordingly, interactions among bio-oil compounds occurred during electrochemical treatment.en_US
dc.rightsMahidol Universityen_US
dc.subjectChemical Engineeringen_US
dc.titleEvolution of Aromatic Structures during the Low-Temperature Electrochemical Upgrading of Bio-oilen_US
Appears in Collections:Scopus 2019

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