S. M. Danov

Kinetics of allyl chloride epoxidation with hydrogen peroxide catalyzed by extruded titanium silicalite

A mechanism is suggested for the heterogeneous catalytic epoxidation of allyl chloride with hydrogen peroxide in methanol. The kinetics of allyl chloride oxidation into epichlorohydrin in the presence of extruded titanium silicalite has been investigated. A kinetic model of the process has been derived from experimental data, and the activation energies of the target and side reactions, the rate constants of the reactions, and the adsorption equilibrium constant have been determined. The allyl chloride epoxidation process has been tested using a bench-scale continuous apparatus, and the adequacy of the kinetic model has been estimated.

Kinetics of propylene epoxidation with hydrogen peroxide

The kinetics of propylene oxidation to propylene oxide in the presence of a titanium-containing zeolite in an isopropyl alcohol medium is reported. The influence of the concentrations of the starting substances and reaction products and temperature on the rate of the process is considered. A mathematical model has been derived from the experimental data obtained. The rate constants, adsorption equilibrium constants, and activation energies of the reactions have been calculated.

Modeling of the vapor-liquid equilibrium in the system formed by the epichlorohydrin synthesis products

The parameters of the NRTL and UNIQUAC models have been estimated for the system formed by epichlorohydrin synthesis products. Mathematical modeling of the vapor-liquid equilibrium in two- and three-component systems at atmospheric pressure has been carried out.

Kinetics of allyl chloride epoxidation with hydrogen peroxide

The kinetics of allyl chloride oxidation to epichlorohydrin in the presence of titanium-containing zeolite was studied. The influence of the concentrations of the initial substances, reaction products, and temperature on the rate of the process was considered. The mathematical model of the process was constructed on the basis of the experimental data obtained. The rate constants, adsorption equilibrium constants, and activation energies of the reactions were calculated.

Regularities of glycidol synthesis by the liquid-phase epoxidation of allyl alcohol with hydrogen peroxide

The main features of the liquid-phase epoxidation of allyl alcohol by hydrogen peroxide in an organic solvent in the presence of the titanium-containing zeolite in the batch reactor were studied. The influence of the amount of the solvent, ratio of reactants, and temperature on the rate of glycidol synthesis was revealed.

Patterns of phenol oxidation process with an aqueous solution of hydrogen peroxide

This paper presents experimental data on the study of catalytic systems based on titanium silicalite (TS-1) for liquid-phase oxidation of phenol. The influence of the main parameters of the process of liquid phase oxidation of phenol with aqueous solution of hydrogen peroxide on the catalyst; the formed titanium silicalite (initial molar ratio of phenol/hydrogen peroxide, temperature) has been studied based on the basic parameters of the process, including the degree of conversion of hydrogen peroxide, the degree of conversion of phenol, the selectivity of the formation of catechol, hydroquinone and 1,4-benzoquinone, and the ratio of products in the reaction mass.

Catalytic Conversion of Glycerol to Lactic Acid: State of the Art and Prospects

In this review article, recent trends in the catalytic processes for the synthesis of lactic acid from glycerol are systematized. Based on literature data, the mechanisms of glycerol conversion in the presence of bases and the oxidative conversion of glycerol are proposed. Advantages and disadvantages of each method are shown and prospects in the use of highly selective heterogeneous catalytic processes are discussed.

A Kinetic Model for the Epoxidation of Allyl Alcohol with Hydrogen Peroxide on Titanium Silicate TS-1

The kinetic regularities of the oxidation of allyl alcohol into glycidol in the presence of titanium silicate are studied at varied initial concentrations of the reagents, products, and temperature. The probable mechanism is used as the basis to develop a substantial kinetic model, which adequately describes the obtained experimental data.

The study of epoxidation of allyl chloride in methanol in the presence of extruded titanium containing silicalite

The liquid-phase epoxidation of allyl chloride in methanol with aqueous solution of hydrogen peroxide was conducted in the presence of extruded titanium containing silicalite and the physico-chemical features of the process were investigated. The effect of the amount of solvent, the initial ratio of the allyl chloride to hydrogen peroxide and the temperature of the process on the yield of the target product (epichlorohydrin) and by-products (3-chloro-1,2-propanediol and 3-chloro-1-methoxypropanol-2) was studied. Based on the obtained results, the optimum conditions of synthesis of epichlorohydrin for a laboratory scale continuous setup were recommended.

Kinetics of propylene epoxidation with hydrogen peroxide catalyzed by extruded titanium silicalite in methanol

The kinetics of propylene oxidation into propylene oxide in the presence of extruded titanium silicalite was studied. Based on the experimental data, a kinetic model of the process was designed and the activation energies of the target and side reactions, the rate constants, and the adsorption equilibrium constants were determined. The adequacy of the proposed kinetic model was verified on a continuously-operated test bench laboratory unit.