Kinetics of the initiated and inhibited oxidation of methyl oleate in homogeneous and aqueous emulsion media

The kinetics of the 2,2′-azobisisobutyronitrile-initiated oxidation of methyl oleate (MO) in the medium of the oxidized substrate itself (homogeneous system) and in an aqueous solution of cetyltrimethylammonium bromide (aqueous emulsion system, AES) was studied. The oxidation was found to occur as a nonbranched chain reaction with quadratic-law chain termination in both neat methyl oleate ([MO] ≈ 2.6 mol/l) and AES. The temperature dependence of the oxidizability parameter for methyl oleate in the temperature range from 303 to 333 K was described by the following expressions:

$begin{gathered} in an Mo medium, log(k_2 (2k_6 )^{ - 0.5} ) = (2.0 pm 0.5) - (27.5 pm 3.2)theta ^{ - 1} [l^{0.5} mol^{ - 0.5} s^{ - 0.5} ]; hfill and in the AES, log(k_2 (2k_6 )^{ - 0.5} ) = (2.4 pm 0.4) - (29.4 pm 2.1)theta ^{ - 1} [l^{0.5} mol^{ - 0.5} s^{ - 0.5} ], hfill end{gathered}$begin{gathered} in an Mo medium, log(k_2 (2k_6 )^{ - 0.5} ) = (2.0 pm 0.5) - (27.5 pm 3.2)theta ^{ - 1} [l^{0.5} mol^{ - 0.5} s^{ - 0.5} ]; hfill and in the AES, log(k_2 (2k_6 )^{ - 0.5} ) = (2.4 pm 0.4) - (29.4 pm 2.1)theta ^{ - 1} [l^{0.5} mol^{ - 0.5} s^{ - 0.5} ], hfill end{gathered}
Keywords:
本文献已被 SpringerLink 等数据库收录！