Variables affecting the yields of fatty esters from transesterified vegetable oils

Journal Article · Mon Oct 01 04:00:00 EDT 1984 · J. Am. Oil Chem. Soc.; (United States)

DOI:https://doi.org/10.1007/BF02541649· OSTI ID:5400983

Freedman, B; Pryde, E H; Mounts, T L

Transesterification reaction variables that affect yield and purity of the product esters from cottonseed, peanut, soybean and sunflower oils include molar ratio of alcohol to vegetable oil, type of catalyst (alkaline vs acidic), temperature and degree of refinement of the vegetable oil. With alkaline catalysts (either sodium hydroxide or methoxide), temperatures of 60 degrees C or higher, molar ratios of at least 6 to 1 and with fully refined oils, conversion to methyl, ethyl and butyl esters was essentially complete in 1 hr. At moderate temperatures (32 degrees C), vegetable oils were 99% transesterified in ca. 4 hr with an alkaline catalyst. Transesterification by acid catalysis was much slower than by alkali catalysis. Although the crude oils could be transesterified, ester yields were reduced because of gums and extraneous material present in the crude oils. 30 references.

• Research Organization: North Regional Research Center, Peoria, IL
• OSTI ID: 5400983
• Report Number(s): CONF-8305278-
• Journal Information: J. Am. Oil Chem. Soc.; (United States), Journal Name: J. Am. Oil Chem. Soc.; (United States) Vol. 61:10; ISSN JAOCA
• Country of Publication: United States
• Language: English

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ALCOHOLS
CATALYSIS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COTTONSEED OIL
ESTERIFICATION
ESTERS
HYDROXY COMPOUNDS
IMPURITIES
KINETICS
LIPIDS
OILS
OPTIMIZATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PEANUT OIL
REACTION KINETICS
SOYBEAN OIL
SUNFLOWER OIL
TEMPERATURE EFFECTS
TRIGLYCERIDES
VEGETABLE OILS
YIELDS