Cited by 35Algal biology and biofuel productionSynthetic Organic Chemistry MethodsCatalysis and Hydrodesulfurization Studies

Production of Jet Fuel Range Hydrocarbons as a Coproduct of Algal Biodiesel by Butenolysis of Long-Chain Alkenones

O’Neil, Gregory W., Culler, Aaron R., Williams, John R., Burlow, Noah P., Gilbert, Garrett J., Carmichael, Catherine A., Nelson, Robert K., Swarthout, Robert F. +1 more·2015·Energy & Fuels

Abstract

Long-chain (35–40 carbons) alkenones are a unique class of lipids biosynthesized by certain species of algae including the industrially grown marine microalgae Isochrysis . Their structures are characterized by a very long linear carbon-chain with trans double bonds and a methyl or ethyl ketone. A method is presented for the isolation of pure alkenones from Isochrysis biomass in parallel with biodiesel production. Yields for the isolated alkenones and biodiesel relative to the starting dry Isochrysis biomass were routinely 3.5 and 12% (w/w), respectively. Alkenones were then converted to smaller hydrocarbon fragments (jet-fuel range) by cross-metathesis with 2-butene (butenolysis) using several commercial ruthenium-based metathesis initiators. Butenolysis with the second-generation Hoveyda-Grubbs catalyst occurred rapidly at 4 °C, yielding near quantitative conversion within 30 min to a mixture containing mostly 8-decen-2-one (C 10 ), 2,9-undecadiene (C 12 ), and 2-heptadecene (C 17 ) as both cis - and trans isomers based on analysis by comprehensive two-dimensional gas chromatography.

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Crossref · 10.1021/ef502617z

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62 of 62 references verified0 citation errors · 0 not checkable

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  • Butenolysis of alkenones using 2-butene generated fuel jet range hydrocarbons principally 2,9-undecane (43%), 2-heptadecene (28%) and 8-decen-2-one (12%) as a mixture of cis and trans isomers.

    “Subsequent butenolysis of the alkenones (using 2-butene) generated a range of fuel jet range hydrocarbons principally, 2,9-undecane (43%), 2-heptadecene (28%) and 8-decen-2-one (12%) as a mixture of cis and trans isomers (Figure 13) [80].”

    From Key Targets for Improving Algal Biofuel Production (2021) · cites this paper as [80]

  • Alkenones can be separated from fatty acids by a saponification-based method.

    “Alkenones can be separated from fatty acids by a saponificationbased method [80].”

    From Key Targets for Improving Algal Biofuel Production (2021) · cites this paper as [80]

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Authors
O’Neil, G. W., Culler, A. R., Williams, J. R., Burlow, N. P., Gilbert, G. J., Carmichael, C. A., Nelson, R. K., Swarthout, R. F., & Reddy, C. M.
Affiliations
  • Western Washington University (US)
  • Woods Hole Oceanographic Institution (US)
Corresponding author
O’Neil, Gregory W.
Venue
Energy & Fuels
Published
2015-01-21
Volume
29
Issue
2
Pages
922-930
ISSN
  • 0887-0624 (ISSN-L)
  • 1520-5029
OpenAlex
W2006247701
Cited by
35
References
62
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 1 · 2022: 2 · 2021: 4 · 2020: 2 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 7 · 2015: 1
FWCI
1.68
Type
journal article
Language
en
Open access
closed
Locations
Energy & Fuels (publishedVersion)
Funders
Division of Chemistry (CHE-1151492)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Chemistry › Organic Chemistry › Synthetic Organic Chemistry Methods
  • Physical Sciences › Engineering › Mechanical Engineering › Catalysis and Hydrodesulfurization Studies
Keywords
alkenones, jet fuel, algal biodiesel, Isochrysis, cross-metathesis, 2-butene, Hoveyda-Grubbs catalyst, marine microalgae

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