октен-1

Catalytic ability of tungsten compounds in the reaction of hydroperoxide epoxidation of 1- octene and tert-butyl hydroperoxide decomposition was investigated. It is shown that the nature of ligand has significant effect on the catalytic activity of tungsten compounds in these reactions. It is established that boride and silicide of tungsten are the best choice for epoxidation reaction, whereas tungsten carbide exhibits poor activity. Tungsten boride is also the most active in the hydroxide decomposition reaction.

The influenceof vanadium-containing compounds as catalysts on the reaction of 1-octene epoxidation by tert-butyl hydroperoxide and the decomposition of this hydroperoxide was investigated. It is shown that the catalytic activity of vanadium compounds depends on catalyst ligand nature. It is established that vanadium boride and carbide are the most active catalysts for hydroperoxide epoxidation, while V2O5 is the most active catalyst oftert-butyl hydroxide decomposition. The highest selectivity of 1,2-epoxyoctene formation is observed when VC is used as a catalyst.

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.

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.

The influence of immobilized and homogeneous Rh-contained complex, [Rh(CO)2Cl]2, on the oxidation reaction of 1-octene by molecular oxygen on the initial stages of process was investigated. It was established that the immobilized as well as homogeneous rhodium complex activate the oxidation reaction in the presence of radical processes initiator – hydroperoxide tert-butyl. It was shown that the usage of the immobilized catalyst allows to reach higher process parameters at lower amount of the applied rhodium complex.