A review of bio-oil upgrading by catalytic hydrotreatment : Advances, challenges, and prospects

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Mingyuan Zhang
  • Yulin Hu
  • Haoyu Wang
  • Haoyang Li
  • Xue Han
  • Yimin Zeng

Detail(s)

Original languageEnglish
Article number111438
Journal / PublicationMolecular Catalysis
Volume504
Online published15 Feb 2021
Publication statusPublished - Mar 2021
Externally publishedYes

Abstract

Fast pyrolysis and hydrothermal liquefaction (HTL) have been regarded as the most promising thermochemical conversion technologies for liquid bio-fuels production. However, the poor quality of generated crude bio-oils, such as high O and water contents, low thermal stability, and high corrosivity, limits their direct applications as the alternative transportation fuels. Thus, a number of upgrading techniques mainly including chemical and physical methods have been developed. Among them, hydrotreatment like hydrodeoxygenation (HDO) as a well-established technology at petroleum refinery plants has been widely adopted for upgrading of the crude oil obtained from pyrolysis or HTL. In this review, the effects of various upgrading reaction conditions (temperature, H2 pressure, solvents, residence time, and catalyst) of HDO treatment of real bio-oil and its mode compounds are thoroughly reviewed. In which, the underlying mechanisms for bio-oil HDO are elucidated with a wide range of its model compounds (lignin-derived oxygenates and carbohydrates-derived oxygenates) and the interaction between these model compounds. Moreover, a discussion regarding the HDO of real bio-oil from pyrolysis and HTL is provided, and the technical/operating problems for the catalytic HDO and the possible solutions are presented. Finally, the important knowledge gaps and future directions are addressed for further investigations. © 2021 Elsevier B.V.

Research Area(s)

  • Biomass, Crude bio-oil, Fast pyrolysis, Hydrodeoxygenation (HDO), Hydrothermal liquefaction

Citation Format(s)

A review of bio-oil upgrading by catalytic hydrotreatment: Advances, challenges, and prospects. / Zhang, Mingyuan; Hu, Yulin; Wang, Haoyu et al.
In: Molecular Catalysis, Vol. 504, 111438, 03.2021.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review