| Autor: |
Mazaletskaya, L., Mazaletskii, A., Karpukhina, G. |
| Předmět: |
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| Zdroj: |
Kinetics & Catalysis; Nov2005, Vol. 46 Issue 6, p830-833, 4p, 2 Charts, 4 Graphs |
| Abstrakt: |
It is found that the tertiary amine N,N,N′,N′-tetramethyl- para-phenylenediamine (TMPD) causes the decomposition of α-phenylethyl hydroperoxide (ROOH), and the interaction between the components occurs in accordance with a complicated rate law. It is demonstrated that more than 30 hydroperoxide molecules ( n) can be degraded at a molecule of TMPD; this fact suggests that the amine has a catalytic effect on the process. The value of n increases with the [ROOH]0/[TMPD]0 ratio. The initial rates of consumption of ROOH and TMPD linearly increase with the initial concentrations of both of the reactants. The apparent rate constant of the reaction is k = 0.4 l mol−1 s−1 (393 K), as calculated from the initial rates of ROOH consumption. As a result of the interaction, TMPD is converted into an inhibitor. The rate constant of the reaction of this inhibitor with ethylbenzene peroxy radicals is about 2 × 104 l mol−1 s−1. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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