Coke formation and its impacts during electrochemical upgrading of bio-oil

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • Xuepeng Wang
  • Wei Deng
  • Yimin Xiong
  • Zhe Xiong
  • Jun Xu
  • Long Jiang
  • Sheng Su
  • Song Hu
  • Yi Wang
  • Jun Xiang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number121664
Journal / PublicationFuel
Volume306
Online published13 Aug 2021
Publication statusPublished - 15 Dec 2021

Abstract

Electrocatalytic hydrogenation is a potential means to upgrade bio-oil under mild working conditions. Here we report the formation of a carbonaceous solid (coke) on the surface of the electrode and its impacts during the electrochemical upgrading of bio-oil. The electrolytic experiments were conducted under the condition of 200 mA cm−2, 25 °C, and ambient pressure. As the electrolytic experiments progressed, the aromatic structures in the bio-oil were decreasing, while the radicals were increasing in their types and concentrations. The aromatic structures in the bio-oil were polymerized to form coke with heteroatom-containing radicals. The coke-covered electrode would enhance the oxidation process and inhibit the transformation of the aromatic structures in bio-oil. Moreover, the heteroatom-containing radicals contained in the initial coke would further enhance the coke formation. Last, an initial strategy was reported to remove the coke deposited on the surface of the electrode during the electrochemical upgrading of bio-oil.

Research Area(s)

  • Aromatic structure, Bio-oil, Coke, Coke removal, Electrochemical upgrading

Citation Format(s)

Coke formation and its impacts during electrochemical upgrading of bio-oil. / Wang, Xuepeng; Deng, Wei; Lam, Chun Ho; Xiong, Yimin; Xiong, Zhe; Xu, Jun; Jiang, Long; Su, Sheng; Hu, Song; Wang, Yi; Xiang, Jun.

In: Fuel, Vol. 306, 121664, 15.12.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review