Pyrolysis of vegetable oil soaps—Palm, olive, rapeseed and castor oils |
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Authors: | Hanna Lappi,Raimo Al n |
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Affiliation: | a Laboratory of Applied Chemistry, Department of Chemistry, University of Jyväskylä, PO Box 35, FI-40014 University of Jyväskylä, Finland |
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Abstract: | Saponified, palm, olive, rapeseed and castor oils were pyrolysed (at 750 °C for 20 s) by pyrolysis gas chromatography with mass selective and flame ionisation detection (Py-GC/MSD and FID) to clarify their thermochemical behaviours. The liquefiable compounds recovered from palm, olive and rapeseed oils mainly contained linear alkenes (up to C19) and alkanes (up to C17), both similar to those found in gasoline (C4-C10) and diesel fuel (C11-C22) boiling range fractions of petroleum, whereas in the case of castor oil a significant amount of undesired oxygen-containing products (e.g., ketones and phenols) were formed. The obtained data on reaction mechanisms can also be utilised in applications where various biofuels are produced, for example, from the extractive-derived by-product (tall oil) of kraft pulping. |
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Keywords: | Pyrolysis Palm oil Olive oil Rapeseed oil Castor oil Vegetable oil soap Biofuel |
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