Hydrolysis of vegetable oils in sub- and supercritical water
Abstract
Water, in its subcritical state, can be used as both a solvent and reactant for the hydrolysis of triglycerides. In this study, soybean, linseed, and coconut oils were successfully and reproducibly hydrolyzed to free fatty acids with water at a density of 0.7 g/mL and temperatures of 260--280 C. Under these conditions the reaction proceeds quickly, with conversion of greater than 97% after 15--20 min. Some geometric isomerization of the linolenic acids was observed at reaction temperatures as low as 250 C. Reactions carried out at higher temperatures and pressures, up to the critical point of water, produced either/or degradation, pyrolysis, and polymerization, of the oils and resultant fatty acids.
- Authors:
-
- National Center for Agricultural Utilization Research, Peoria, IL (United States)
- Publication Date:
- OSTI Identifier:
- 458471
- Resource Type:
- Journal Article
- Journal Name:
- Industrial and Engineering Chemistry Research
- Additional Journal Information:
- Journal Volume: 36; Journal Issue: 3; Other Information: PBD: Mar 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; LINSEED OIL; SOYBEAN OIL; VEGETABLE OILS; HYDROLYSIS; COCONUTS; CARBOXYLIC ACIDS; SUPERCRITICAL STATE; WATER
Citation Formats
Holliday, R L, King, J W, and List, G R. Hydrolysis of vegetable oils in sub- and supercritical water. United States: N. p., 1997.
Web. doi:10.1021/ie960668f.
Holliday, R L, King, J W, & List, G R. Hydrolysis of vegetable oils in sub- and supercritical water. United States. https://doi.org/10.1021/ie960668f
Holliday, R L, King, J W, and List, G R. 1997.
"Hydrolysis of vegetable oils in sub- and supercritical water". United States. https://doi.org/10.1021/ie960668f.
@article{osti_458471,
title = {Hydrolysis of vegetable oils in sub- and supercritical water},
author = {Holliday, R L and King, J W and List, G R},
abstractNote = {Water, in its subcritical state, can be used as both a solvent and reactant for the hydrolysis of triglycerides. In this study, soybean, linseed, and coconut oils were successfully and reproducibly hydrolyzed to free fatty acids with water at a density of 0.7 g/mL and temperatures of 260--280 C. Under these conditions the reaction proceeds quickly, with conversion of greater than 97% after 15--20 min. Some geometric isomerization of the linolenic acids was observed at reaction temperatures as low as 250 C. Reactions carried out at higher temperatures and pressures, up to the critical point of water, produced either/or degradation, pyrolysis, and polymerization, of the oils and resultant fatty acids.},
doi = {10.1021/ie960668f},
url = {https://www.osti.gov/biblio/458471},
journal = {Industrial and Engineering Chemistry Research},
number = 3,
volume = 36,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 1997},
month = {Sat Mar 01 00:00:00 EST 1997}
}
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