Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 415, Issue -, Pages 1-8Publisher
ELSEVIER
DOI: 10.1016/j.molcata.2016.01.019
Keywords
Aldol condensation; Carbon-carbon bond formation; Ketonic decarboxylation; Hydride transfer; Second generation diesel fuel
Categories
Funding
- MINECO [MAT2011-28009]
- Consolider Ingenio [2010-MULTICAT, CSD2009-00050, SEV-2012-0267]
- Generalitat Valenciana [PROMETEOII/2013/011]
- Spanish National Research Council (CSIC) [Es 2010RU0108]
- CSIC (JAE Programme)
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Carbon-carbon bond formations and deoxygenation reactions are important for biomass up-grading. The classical ketonic decarboxylation of carboxylic acids provides symmetrical ketones with 2n+1 carbon atoms and eliminates three oxygen atoms. Herein, this reaction is carried out with titanium oxide at 400 degrees C, and an olefin with 2n + 1 carbon atoms is obtained instead of the ketone. For olefin formation hydrogen transfer reactions are required from suitable precursors to form aromatics and coke. Additional aldol condensation reactions increase further molecular weight in the product mixture. Hence, a combination of titanium oxide with a hydrodeoxygenation bed provides double amount of diesel fuel as the combination with zirconium oxide when reacting hexose-derived pentanoic acid. (C) 2016 Elsevier B.V. All rights reserved.
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