Abstract
Soybean oil was partially hydrogenated at 170 and 200C with 0.5 and 0.1% copper-chromium catalysts, respectively. The reaction proceeded selectively at both temperatures, although selectivity was better at the lower temperature. Both commercial and laboratory-prepared catalysts reduced the linolenic acid to less than 1% and with selectivity ratios (KLe/KLo) ranging from 6 to 13. Since stearate did not increase, linoleate selectivity (KLo/KOl) was extremely high. About 80% or more of the original linoleic acid remained in the hydrogenated products as measured by the alkali-isomerization method. More conjugated dienes were formed at 200 than at 170C.
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Koritala, S., Dutton, H.J. Selective hydrogenation of soybean oil. II. Copper-chromium catalysts. J Am Oil Chem Soc 43, 556–558 (1966). https://doi.org/10.1007/BF02679872
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DOI: https://doi.org/10.1007/BF02679872