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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.
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Citations
Cited by
Hydrothermal liquefaction of biomass: A review of subcritical water technologies
Toor, S. S., Rosendahl, L., & Rudolf, A. (2011) · Energy · doi:10.1016/j.energy.2011.03.013 · Cited by 1,840
Roles of Water for Chemical Reactions in High-Temperature Water
Akiya, N., & Savage, P. E. (2002) · Chemical Reviews · doi:10.1021/cr000668w · Cited by 1,581
Singh, A., & Olsen, S. I. (2011) · Applied Energy · doi:10.1016/j.apenergy.2010.12.012 · Cited by 471
A review of bio-oil production from hydrothermal liquefaction of algae
Guo, Y., Yeh, T., Song, W., Xu, D., & Wang, S. (2015) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2015.04.049 · Cited by 395
Carr, A. G., Mammucari, R., & Foster, N. R. (2011) · Chemical Engineering Journal · doi:10.1016/j.cej.2011.06.007 · Cited by 358
Metadata
- Authors
- Holliday, R. L., King, J. W., & List, G. R.
- Venue
- Industrial & Engineering Chemistry Research
- Publisher
- American Chemical Society (ACS)
- Published
- 1997-03-01
- Volume
- 36
- Issue
- 3
- Pages
- 932-935
- ISSN
- 0888-5885 (ISSN-L)
- 1520-5045
- OpenAlex
- W2028455502
- Cited by
- 229
- References
- 0
- FWCI
- 5.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Holliday, R. L., King, J. W., & List, G. R. (1997). Hydrolysis of Vegetable Oils in Sub- and Supercritical Water. Industrial & Engineering Chemistry Research. https://doi.org/10.1021/ie960668f
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