catalyst

Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues. 9. Stone Mastic Asphalt Using Formaldehyde Modified Tars

The work is devoted to a completely new binder for asphalt-concrete mixtures, in particular, crushed stone-mastic mixtures. In the role of a binder, it is proposed to use raw materials for the production of bitumen − tars modified with a forming agent (catalyst and formalin). The paper proves the advantage of using tar modified with formalin, in comparison with standard oxidized bitumens, on the example of established physical and mechanical properties of bituminous binders and crushed-mastic asphalt concrete SMA-15.

STUDY OF THE CATALYTIC ACTIVITY OF Mo2B IN THE REACTION OF β-ETHYL ALLYL-α-ETHYL ACRYLATE WITH tert-BUTYL HYDROPEROXIDE

Kinetic regularities of catalyst activation processes in the reaction of epoxidation of ethylallyl ethyl acrylate with tert-butyl hydroperoxide in the presence of Mo2B were investigated. It is shown that the activation of the catalyst, which takes place at the beginning of the epoxidation process, mainly occurs under the simultaneous action of tert-butyl hydroperoxide and olefin.

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.

Рerfluorinated sulfamides in the oxidation process of cyclohexane

Ways of using perfluorinated sulfonamides in various technological processes are considered. The possibility of using aminotoxane as a catalyst in the process of cyclohexane oxidation was studied. Various technological parameters of the use of the binary catalytic system: cobalt naphthenate - aminotoxane in the process of cyclohexane oxidation and their influence on the main indicators of this process were studied.

Study on Heterogeneous Catalytic Oxidative Dehydrogenation of Isopropylbenzene to α-Methylstyrene

The influence of the FeBiMoO catalysts composition on their properties in the oxidative dehydrogenation reaction of isopropylbenzene has been studied. The catalyst with the atomic ratio of active components Fe : Bi : Mo = 2 : 1 :2 was found to be the optimum for the maximum yield of α-methylstyrene. The assumption that the improvement of catalytic properties is due to the formation of a ternary compound Fe2Bi3Mo2O12, which provides optimal acid-base properties of the catalytic surface, has been approved.

Modification of the Catalytic System for the Industrial Chlorine Processing of Ethylene in 1,2-Dichloroethane

A new mechanism for the reaction of direct (additive) chlorination of ethylene with chlorine from the formation of 1,2-dichloroethane in the presence of FeCl3 catalyst promoted by NaCl has been proposed. It was found that the rate depends on the active phase concentration of the catalyst and the promoter, as well as the formation of the Na[Fe(C2H4Cl)4] complex, which is a surface intermediate of the reaction.

The Reaction of Oleic Acid with a Mixture of Ethanolamines

Regularities of the reaction of oleic acid with a mixture of ethanolamines have been investigated under non-stationary conditions in the presence of H-form of cation-exchange resin KU-2-8 as a catalyst. The effect of a ratio between reagents and the catalyst on the acid conversion, selectivity and products yield has been determined. N-acylation of mono- and diethanolamines by an oleic acid was found to be more intensive compared with esterification of hydroxy groups of ethanolamine.