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United States Department of Agriculture

Agricultural Research Service

Title: Potential Large-Scale Production of Conjugated Soybean Oil Catalyzed by Photolyzed Iodine in Hexanes)

item Chintareddy, Venkat
item Oshel, Reed
item Doll, Kenneth - Ken
item Verkade, John

Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 1/1/2010
Publication Date: 3/21/2010
Citation: Chintareddy, V.R., Oshel, R.E., Doll, K.M., Verkade, J.G. 2010. Potential Large-Scale Production of Conjugated Soybean Oil Catalyzed by Photolyzed Iodine in Hexanes [abstract]. American Chemical Society National Meeting. p. 142.

Interpretive Summary:

Technical Abstract: A laboratory apparatus is described for the production of conjugated soybean oil (SBO) in pound quantities via irradiation with visible-light. Under our reaction conditions, quantitative conversions (determined by NMR spectroscopy) of SBO to conjugated SBO, in hexanes at reflux temperatures, were achieved. Variables, such as catalyst loading, light source and temperature, have been investigated. A relatively low concentration of SBO in hexanes was found to be essential for high conversions to conjugated SBO. Fatty acid isomer distributions in the treated vegetable oil were measured by gas chromatography and the conjugated diene was found to be predominantly of the trans 9, trans 11 configuration. This contrasts the predominantly cis that predominates using catalysts such as bases and organometallics. Removal and recovery of the iodine catalyst from our reaction media will be discussed. The use of a high pressure sodium lamp gave significant improvement in the reaction rates as well as in the drying oil properties. Results of preliminary tests demonstrating the exceptional drying properties of our conjugated SBO will also be presented.

Last Modified: 05/25/2017
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