Hydrocarbon Fuels from Vegetable Oils via Hydrolysis and Thermo-catalytic Decarboxylation

by W.-C. Wang, N. Thapaliya, A. A. Campos, L. F. Stikeleather, W. L. Roberts
Year: 2012

Bibliography

Hydrocarbon Fuels from Vegetable Oils via Hydrolysis and Thermo-catalytic Decarboxylation
W.-C Wang, N. Thapaliya, A. Campos, L.F. Stikeleather, and W.L. Roberts
FUEL 95:1, 622-629 (2012)

Abstract

Conversion of canola oil to normal alkane hydrocarbons was investigated using sequential reactions: continuous thermal hydrolysis and fed-batch thermo-catalytic decarboxylation. The free fatty acid (FFA) intermediate product from hydrolysis was quantified using GC–FID, which showed 99.7% conversion and the following components: palmitic, oleic, linoleic, linolenic, stearic, arachidic and behenic acids. The FFA was saturated then decarboxylated at an average rate of 15.5 mmoles/min using a 5% Pd/C catalyst at 300 °C. Approximately 90% decarboxylation conversion to n-alkanes was achieved within 5 h of the reaction. The resulting mixture of n-alkanes can be readily converted into renewable diesel using isomerization to improve the cold flow properties of the fuel.

Keywords

Biofuel production Free fatty acid Hydrocarbon fuels Hydrolysis Deoxygenation