Fuel 212 (2018) 470–478 Contents lists available at ScienceDirect Fuel journal homepage: www.elsevier.com/locate/fuel Full Length Article Continuous low pressure decarboxylation of fatty acids to fuel-range hydrocarbons with in situ hydrogen production Md. Zakir Hossain, Muhammad B.I. Chowdhury, Anil Kumar Jhawar, William Z. Xu, Paul A. Charpentier Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario N6A 5B9, Canada GR APHICAL A BSTRACT ABSTRACT Fatty acids are considered as a renewable feedstock for the production of high value products such as fuel-range hydrocarbons. Decarboxylation can produce high quality fuels from fatty acids, although either high pressure or additional hydrogen is required. This study investigated a low pressure (< 500 psi) continuous decarboxylation process examining oleic acid in a continuous ﬁxed bed reactor using activated carbon, which gave surprisingly high quality fuel-like hydrocarbons with no external hydrogen. The results showed that activated carbon performed as a catalyst for both decarboxylation and in situ hydrogen production. The reaction parameters for maximum degree of decarboxylation (91%) was found to be 400 °C, 2 h and water-to-oleic acid ratio of 4:1. To determine the degree of decarboxylation and reaction mechanism, the formed liquid products were examined by ATR-FTIR, Raman and
Fuel – Elsevier
Published: Jan 15, 2018
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