Journal
ACS CATALYSIS
Volume 1, Issue 3, Pages 227-231Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cs1001306
Keywords
supercritical; kinetics; cracking; biofuel
Categories
Funding
- U-M College of Engineering
- National Science Foundation [CBET-0755617, EFRI-0937992]
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we converted palmitic and oleic acids to fuel range hydrocarbons using two activated carbons in near and supercritial water with no H-2 added. The main products from palmitic acid were C-8-C-15 n-alkenes. The major products from oleic acid were C-12-C-17 n-alkanes and some C-17 olefins. The pseudo-first-order rate constants displayed Arrhenius behavior. The apparent activation energy displayed Arrhenius behaviour The apparent activation energy of 125 kJ/mol for palmitic acid decarboxylation is higher than that observed with a 5% Pt/C catalyst. Nevertheless, these results show that activated carbons possess catalytic activity for the hydrothermal decarboxylation of fatty acids.
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