Improved synthesis and characterization of saturated branched‐chain fatty acid isomers

European Journal of Lipid Science and Technology - Tập 114 Số 2 - Trang 213-221 - 2012
Helen L. Ngo1, Eunha Hoh2,1, Thomas A. Foglia1
1USDA ARS, Eastern Regional Research Center, Wyndmoor, PA, USA
2Graduate School of Public Health, San Diego State University, San Diego, CA, USA

Tóm tắt

AbstractThe development of viable technologies for producing green products from renewable fats and oils is highly desirable since such materials can serve as replacements for non‐renewable and poorly biodegradable petroleum‐based products. Mixtures of saturated branched‐chain fatty acid isomers (sbc‐FAs), commonly referred to as isostearic acid, are important intermediates for the production of biodegradable lubricants, cosmetics, emollients, and hydraulic fluids. Present methods for producing sbc‐FAs, however, often give low yields of sbc‐FAs or sbc‐FA preparations with a high content of dimer acid fatty acid co‐products. This study reports an improved route to synthesizing sbc‐FAs from monounsaturated fatty acids using a modified H‐Ferrierite zeolite catalyst in conjunction with small amounts of triphenylphosphine additive. The yields of sbc‐FAs (up to 80 wt%) and co‐products (up to15 wt%) were determined using a modification of a previously reported GC method. A more detailed analysis of the distribution of sbc‐FA isomers in the products was made by the combined use of GC × GC‐TOF‐MS. Additionally, it was found that the H‐Ferrierite zeolite catalyst was recyclable and reusable up to 10 times without significant loss of activity and selectivity for sbc‐FAs.

Từ khóa


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Thông tin
Thông tin xuất bản

European Journal of Lipid Science and Technology

Tập 114 Số 2

213-221

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