Castor oil hydrogenation by a catalytic hydrogen transfer system using limonene as hydrogen donor
M Martinelli, RCS Schneider, VZ Baldissarelli… - Journal of the American …, 2005 - Springer
M Martinelli, RCS Schneider, VZ Baldissarelli, ML von Holleben, EB Caramao
Journal of the American Oil Chemists' Society, 2005•SpringerThe hydrogenation of castor oil was investigated using a catalytic transfer hydrogenation
system in which palladium on carbon was the catalyst and limonene was the solvent and
hydrogen donor. The highest percentage of castor oil modification occurred at 178° C using
1% Pd/C and an oil/limonene ratio of 1∶ 3. The optimized system presented very good
reproducibility and 100% conversion of the ricinoleate. GC using a mass spectrometer as
detector and 1 H NMR spectra of the products indicated that hydrogenation was …
system in which palladium on carbon was the catalyst and limonene was the solvent and
hydrogen donor. The highest percentage of castor oil modification occurred at 178° C using
1% Pd/C and an oil/limonene ratio of 1∶ 3. The optimized system presented very good
reproducibility and 100% conversion of the ricinoleate. GC using a mass spectrometer as
detector and 1 H NMR spectra of the products indicated that hydrogenation was …
Abstract
The hydrogenation of castor oil was investigated using a catalytic transfer hydrogenation system in which palladium on carbon was the catalyst and limonene was the solvent and hydrogen donor. The highest percentage of castor oil modification occurred at 178°C using 1% Pd/C and an oil/limonene ratio of 1∶3. The optimized system presented very good reproducibility and 100% conversion of the ricinoleate. GC using a mass spectrometer as detector and 1H NMR spectra of the products indicated that hydrogenation was accompanied by dehydrogenation leading to a mixture of 12-hydroxy and 12-keto stearic derivatives.
Springer
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