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A polarographic investigation of the kinetics of epoxidation of unsaturated fatty acid esters
Author(s) -
Ricciuti Constantine,
Silbert Leonard S.,
Port William S.
Publication year - 1957
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02640455
Subject(s) - polarography , chemistry , acetic acid , kinetics , fatty acid , vinyl acetate , isopropyl , benzene , arrhenius equation , organic chemistry , nuclear chemistry , inorganic chemistry , activation energy , physics , quantum mechanics , copolymer , polymer
Summary A polarographic technique which uses a nonaqueous electrolytic solution consisting of 0.25 M ammonium acetate in glacial acetic acid is a suitable medium for the investigation of the kinetics of fatty acid ester epoxidations. From the polarographic data the specific reaction rate constants for the perlauric acid epoxidation of vinyl laurate, methyl oleate, and vinyl oleate in benzene at 25°C. were found to be 12, 232, and 270 × 10 −3 l./mole −1 min −1 . The Arrhenius equation for the epoxidations of methyl oleate and vinyl oleate by perlauric acid can be expressed as k= 5.53 x 10 7e- 11,500 RTa n dk = 8.61 x 10 6e- 10,300 RT .