TY - JOUR AB - 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 degrees 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. AD - Western Washington Univ, Dept Chem, Bellingham, WA 98225 USA AN - WOS:000349943300053 AU - O'Neil, G. W. AU - Culler, A. R. AU - Williams, J. R. AU - Burlow, N. P. AU - Gilbert, G. J. AU - Carmichael, C. A. AU - Nelson, R. K. AU - Swarthout, R. F. AU - Reddy, C. M. DA - Feb DO - 10.1021/ef502617z IS - 2 J2 - Energ Fuel KW - olefin metathesis catalysts LA - English N1 - Cb9ht PY - 2015 SN - 0887-0624 SP - 922-930 ST - Production of Jet Fuel Range Hydrocarbons as a Coproduct of Algal Biodiesel by Butenolysis of Long-Chain Alkenones T2 - Energy & Fuels TI - Production of Jet Fuel Range Hydrocarbons as a Coproduct of Algal Biodiesel by Butenolysis of Long-Chain Alkenones UR - ://WOS:000349943300053 VL - 29 ID - 11668 ER -