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Hydrogenation of canola oil using chromium catalysts
Author(s) -
Bernstein P. A.,
Graydon W. F.,
Diosady L. L.
Publication year - 1989
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/bf02669951
Subject(s) - chromium , iodine value , catalysis , canola , homogeneous , chemistry , selectivity , diene , iodine , nuclear chemistry , organic chemistry , inorganic chemistry , physics , natural rubber , food science , thermodynamics
Homogeneous, supported and precipitated chromium catalysts were prepared from chromium hexacarbonyl in an attempt to selectively hydrogenate canola oil. These chromium compounds showed low activity, lowering the iodine value of the oil by only 10 IV units. The concentration of trans ‐isomers, however, was very low (<1% for most runs). Infrared spectroscopy revealed the presence of a Cr(CO) 3 (diene) PPH 3 complex in two of the hydrogenated oils. The selectivity and the mechanism by which chromium catalysts hydrogenate unsaturates are discussed.