кінетичні закономірності

Activation of Mo2B Catalyst in the Epoxidation Reaction of α-Ethylallyl Ethyl Acrylate with tert-Butyl Hydroperoxide

The regularities of Mo2B catalyst activation in the epoxidation reaction of $\alpha$-ethylallyl ethyl acrylate with tert-butyl hydroperoxide have been studied. It has been shown that the catalyst activation process is described by the Avrami-Erofeev topokinetic equation and  includes two successive stages – the nucleation and formation of a new phase active in the epoxidation reaction. The forma- tion of epoxy only occurs in the presence of the activated form of the catalyst. The effective and topochemical process constants have been calculated.

About the correlation to activity of catalyst of Mо2B and selectivity of formation of epoxide in reaction of epoxidation oct-1-ene with tert-butyl hydroperoxide

This work is dedicated to the study of change of composition of surface of catalyst of Мо2В in the reaction of epoxidation of oct-1-ene tert-butyl hydroperoxide under the action of reactionary environment. And as with this process the constrained selectivity of formation of epoxide.

Presented results of x-ray phase analysis of initial and exhaust in a reaction epoxidation of standards of boride of molybdenum - Мо2В. The obtained data testify that both a weekend and exhaust catalyst contains one and that diffraction lances that answer one crystalline phase of Мо2В.

ACTIVATION OF Мо2В CATALYST IN OCT-1-ENE EPOXIDATION WITH TERT-BUTYL HYDROPEROXIDE

The activation of Mo2B catalyst in the epoxidation of oct-1-ene with tert-butyl
hydroperoxide was researched. Dependences of the initial rate of hydroperoxide consumption
on the initial concentration of octene-1, tert-butyl hydroperoxide and the amount of catalyst in
the reaction mixture in the presence of an unactivated form of the Mo2B catalyst were studied.
The activation process can be described by the Avraami-Erofeev topokinetic equation and
includes two successive steps, viz., the nucleation and formation of a new active phase. The

Кінетичні закономірності окиснення октену-1 молекулярним киснем у присутності біметалевого гомогенного каталізатора [(Allyl)ClPd(CN)Ru(Py)4(CN)PdCl(Allyl)]

Вивчено вплив концентрацій октену-1, гомогенного ініціатора (гідропероксиду трет-бутилу) та біметалевого гомогенного каталізатора [(Allyl)ClPd(CN)Ru(Py)4(CN)PdCl(Allyl)] на перебіг початкових стадій реакції рідиннофазного окиснення октену-1 молекулярним киснем. Показано наявність каталітичної та некаталітичної складової у процесі окиснення. Встановлено, що порядок реакції за гідропероксидом і октеном дорівнює oдиниці, тоді як за каталізатором – є менший від одиниці. Розрахована ефективна константа швидкості.