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Synthesis and characterization of some long-chain diesters with branched or bulky moieties |
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| Authors: | Gerhard Knothe Robert O Dunn Michael W Shockley Marvin O Bagby |
| Affiliation: | (1) USDA, ARS, NCAUR, 1815 N. University St., 61604 Peoria, IL;(2) Present address: Caterpillar, Inc., Tech Center-E, P.O. Box 1875, 61656-1875 Peoria, IL |
| Abstract: | Several novel fatty diesters with bulky moieties were synthesized by esterification of mono- or bifunctional fatty acids or with mono- or bifunctional alcohols using p-toluenesulfonic acid as catalyst. They were characterized by 1H and 13C nuclear magnetic resonance as well as positive chemical ionization (PCl) mass spectrometry. The PCl mass spectra of the resulting diol diesters and diacid diesters are discussed and compared. The compounds were investigated as potential additives for improving the cold flow properties of vegetable oil esters used as biodiesel. Retired. |
| Keywords: | Additives biodiesel diacid diesters diol diesters low-temperature flow properties mass spectrometry nuclear magnetic resonance |
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