Castor oil hydrogenation by a catalytic hydrogen transfer system using limonene as hydrogen donor | Zendy

Martinelli Márcia | Zendy; Schneider Rosana de Cassia de Souza | Zendy; Baldissarelli Vanessa Za | Zendy; von Holleben Maria Luiza | Zendy; Caramao Elina Bastos | Zendy

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Castor oil hydrogenation by a catalytic hydrogen transfer system using limonene as hydrogen donor

Author(s) -

Martinelli Márcia,

Schneider Rosana de Cassia de Souza,

Baldissarelli Vanessa Za,

von Holleben Maria Luiza,

Caramao Elina Bastos

Publication year - 2005

Publication title -

journal of the american oil chemists' society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.512

H-Index - 117

eISSN - 1558-9331

pISSN - 0003-021X

DOI - 10.1007/s11746-005-1067-4

Subject(s) - limonene , catalysis , castor oil , chemistry , dehydrogenation , hydrogen , organic chemistry , solvent , chromatography , essential oil

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 1 H NMR spectra of the products indicated that hydrogenation was accompanied by dehydrogenation leading to a mixture of 12‐hydroxy and 12‐keto stearic derivatives.

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