Polymerization during low-temperature electrochemical upgrading of bio-oil: Effects of interactions among bio-oil fractions

Wei Deng, Xuepeng Wang, Syed Shatir A. Syed-Hassan, Chun Ho Lam, Xun Hu, Zhe Xiong, Hengda Han, Jun Xu, Long Jiang, Sheng Su, Song Hu, Yi Wang and Jun Xiang

Energy, 2022, vol. 251, issue C

Abstract: The electrochemical method is becoming a promising approach to deliver the bio-oil upgrading objective at room temperature. However, it still faces the coke formation issue because of the easy polymerization nature of bio-oil. Interactions among components impact the polymerization during the electrochemical upgrading of bio-oil. This study investigates the effects of interactions between the aromatic-rich and aromatic-poor fractions (ARFs and APFs) of the bio-oil on polymerization under various reaction time and current densities. Coke yield differences provide direct evidence of the existence of interactions between ARFs and APFs during the electrochemical upgrading process. Our results indicate that the coke yields and its condensation level are decreased by the interactions. The surface area, pore volume and the functionalities content of the coke are increased by the interactions. In addition to polymerization, more types of reactions including hydrogenation and esterification are induced by the interactions, resulting in more types of products and less coke. The interactions can inhibit polymerization by consuming the coke precursors before their condensation. The interactions can also inhibit the anodic adsorption and oxidation, thus depressing polymerization and coke formation.

Keywords: Bio-oil; Electrochemistry; Polymerization; Upgrading; Interactions (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:251:y:2022:i:c:s0360544222008477

DOI: 10.1016/j.energy.2022.123944

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