Novel pathways for fuels and lubricants from biomass optimized using life-cycle greenhouse gas assessment

Novel pathways for fuels and lubricants from biomass optimized using life-cycle greenhouse gas assessment

TitleNovel pathways for fuels and lubricants from biomass optimized using life-cycle greenhouse gas assessment
Publication TypeJournal Article
Year of Publication2015
AuthorsMadhesan Balakrishnan, Eric R Sacia, Sanil Sreekumar, Gorkam Gunbas, Amit A Gokhale, Corinne Scown, F. Dean Toste, Alexis T Bell
JournalProceedings of the National Academy of Sciences
Pagination201508274
Date Published04/2015
ISSN0027-8424
Abstract

Decarbonizing the transportation sector is critical to achieving global climate change mitigation. Although biofuels will play an important role in conventional gasoline and diesel applications, bioderived solutions are particularly important in jet fuels and lubricants, for which no other viable renewable alternatives exist. Producing compounds for jet fuel and lubricant base oil applications often requires upgrading fermentation products, such as alcohols and ketones, to reach the appropriate molecular-weight range. Ketones possess both electrophilic and nucleophilic functionality, which allows them to be used as building blocks similar to alkenes and aromatics in a petroleum refining complex. Here, we develop a method for selectively upgrading biomass-derived alkyl methyl ketones with >95% yields into trimer condensates, which can then be hydrodeoxygenated in near-quantitative yields to give a new class of cycloalkane compounds. The basic chemistry developed here can be tailored for aviation fuels as well as lubricants by changing the production strategy. We also demonstrate that a sugarcane biorefinery could use natural synergies between various routes to produce a mixture of lubricant base oils and jet fuels that achieve net life-cycle greenhouse gas savings of up to 80%.

DOI10.1073/pnas.1508274112
Short TitleProc Natl Acad Sci USA