Bio-oils upgrading for second generation biofuels

Ineîs Grac̀a, José M. Lopes*, Henrique S. Cerqueira, Maria F. Ribeiro

*Corresponding author for this work

Research output: Contribution to journalReview article

111 Citations (Scopus)

Abstract

The envisaged upgrading of lignocellulosic biomass derived feedstocks (bio-oils) in dedicated units or by coprocessing in existing units of the refinery, to partially replace crude oil in the production of transportation fuels, is a topic that has been receiving much attention from both industry and academia in recent years. Regardless of lignocellulosic biomass origin, these feedstocks are complex mixtures of many oxygenated hydrocarbons. Therefore, their upgrading toward liquid fuels must include oxygen removal. So far, two main routes have been proposed, considering many studies at laboratory scale and others from industry: catalytic hydrotreatment (HDT), mainly hydrodeoxygenation (HDO), and catalytic cracking, technologies that are already present in today's refineries configuration. HDO has been performed at high hydrogen pressure, using catalysts based on those typically applied in conventional hydrotreating, as well as a new type of supported noble metal and transition metal catalysts. Catalytic cracking occurs at atmospheric pressure, using acid catalysts, mainly the active phases of fluid catalytic cracking (FCC) catalysts (HY and HZSM-5 zeolites). The present review is then focused on the upgrading possibilities of renewable nonedible feedstocks, obtained from biomass fast pyrolysis or liquefaction, in petroleum refineries, toward the production of second generation biofuels. It includes the recent studies concerning the alternative of bio-oils coprocessing together with crude oil feedstocks. In fact, although all these feedstocks have the potential to be directly converted into transportation fuels in dedicated units, it seems more attractive to upgrade them in combination with conventional feedstocks.

Original languageEnglish
Pages (from-to)275-287
Number of pages13
JournalIndustrial and Engineering Chemistry Research
Volume52
Issue number1
Early online date21 Nov 2012
DOIs
Publication statusPublished - 9 Jan 2013

Fingerprint

Biofuels
Feedstocks
Oils
Catalytic cracking
Catalysts
Biomass
Petroleum
Crude oil
Fluid catalytic cracking
Zeolites
Petroleum refineries
Liquid fuels
Liquefaction
Precious metals
Hydrocarbons
Complex Mixtures
Atmospheric pressure
Transition metals
Hydrogen
Industry

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Bio-oils upgrading for second generation biofuels. / Grac̀a, Ineîs; Lopes, José M.; Cerqueira, Henrique S.; Ribeiro, Maria F.

In: Industrial and Engineering Chemistry Research, Vol. 52, No. 1, 09.01.2013, p. 275-287.

Research output: Contribution to journalReview article

Grac̀a, Ineîs ; Lopes, José M. ; Cerqueira, Henrique S. ; Ribeiro, Maria F. / Bio-oils upgrading for second generation biofuels. In: Industrial and Engineering Chemistry Research. 2013 ; Vol. 52, No. 1. pp. 275-287.
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