In this article has been carried out the study and comparing the reactivity of cyclohexanol and methylcyclohexanol isomers in the oxidative dehydrogenation reaction over modified zeolite catalysts. For this purpose, have been investigated the kinetic laws for the two unstudied isomers of methylcyclohexanol (2- and 3-methylcyclohexanol), proposed the mechanisms, kinetic stage schemes for the formation of target products, and developed kinetic models of these processes. It has been found that the rates of oxidative dehydrogenation of all methylcyclohexanol isomers are practically the same and exceed the rate of oxidative dehydrogenation of cyclohexanol to cyclohexanone.

Modifikasiya olunmuş aktiv metalseolit katalizatoru üzәrindә metiltsikloheksanın metiltsikloheksadienә selektiv oksidlәşdirici dehidrogenlәşdirmә prosesinin kinetik modeli әsasında reaktor tipinin seçimi vә nәzәri optimallaşdırılması aparılmışdır. Müәyyәn olunmuşdur ki, baxılan prosesi ideal sıxışdırma tipli reaktorda aparılması daha mәqsәdәuyğundur. Prosesin nәzәri optimallaşdırılması nәticәsindә optimal texnoloji rejimlәri tәyin olunmuşdur. Reaktor elementinin verilmiş mәhsuldarlığa görә optimal konstruktiv ölçülәri hesablanmışdır. İstilik effektlәrini vә tәzyiq düşküsünü nәzәrә alaraq prosesin tam riyazi modeli vә prinsipial texnoloji sxemi tәrtib olunmuşdur.

The kinetic regularities of the oxidative dehydrogenation reaction of individual isomers of methylcyclopentene over aluminum-copper molybdenum catalyst to methylcyclopentadiene in an axial reactor were studied and a kinetic model of the process was created. It was determined that 1-methylcyclopentene undergoes partial and destructive oxidation and the products of the reaction are methylcyclopentadiene, C2-C3 hydrocarbons and CO2. 3-Methylcyclopentene undergoes oxidative dehydrodemethylation to cyclopentadiene in addition to the indicated directions. Dehydrodemethylation of 1-Methylcyclopentene to cyclopentadiene is observed only in the conditions of migration of the double bond from the a-state to the B-state. Based on the nature of the curves characterizing the dependence of the selectivity to the reaction products on the conversion of the substrate, it was determined that the dehydrogenation process proceeds with a parallel sequential mechanism. Based on the prepared kinetic model of the process, the choice of the reactor type and theoretical optimization was carried out. The calculations show that it is more appropriate to carry out the oxidative dehydrogenation process in ideal compression type reactors. As a result of the theoretical optimization of the process, its optimal technological modes were determined. The optimal structural dimensions of the reactor elements according to the given productivity have been calculated. A complete mathematical model of the process has been developed taking into account the thermal effects and pressure drop. The obtained results can be used in designing the process of oxidative dehydrogenation of 1-and 3-methylcyclopentene to methylcyclopentadiene, either individually or as a mixture of isomers

With the purpose of development of high efficiency catalysts for reactions of the oxidative conversion of lower olefins and paraffins into the desired products of petrochemical industry it has been synthesized by ion exchange method a range of the metalzeolite catalysts on the basis of synthetic (NaY) and natural (pure and dealuminated clinoptilolite and mordenite) zeolites and the cations of different metals. It has been established that the metalzeolite catalysts prepared on the basis of synthetic zeolite NaY shows relatively high activity in the oxidative conversion of ethylene and propylene into acetaldehyde and acetone accordingly. It has been also synthesized a highly effective metalzeolite catalysts for the processes: oxidative conversion of methane into ethylene; oxidative conversion of propane into acetaldehyde and formaldehyde; oxidative conversion of methane to ethylene and acetylene; oxidative conversion of methane to 1,4-butanediol

A study is performed of the catalytic activity of a natural zeolite (clinoptilolite) modified by means of ion exchange with Mn2+, Mg2+, Li+, and Ni2+ cations in the oxidative conversion of methane to 1,4‑butanediol using molecular oxygen. It is found that clinoptilolite with silicate modulus λ = 10.8, 80–85

The article studied and compared the reactivity of cyclohexanol and methylcyclohexanol isomers in the oxidative dehydrogenation reaction over modified zeolite catalysts. It found that rates of oxidative dehydrogenation of all methylcyclohexanol isomers are practically the same and exceed rates of oxidative dehydrogenation of cyclohexanol into cyclohexanone.

The paper presents the results of the development of the complete mathematical model for the oxidative dehydrogenation of isopropanol to acetone on the metal-zeolite catalyst – CuPd-mordenite. Using the kinetic model of this process have been chosen the optimal type of reactor. Have been identified the most significant physicochemical phenomena significantly affect to the process. The mathematical description of this process consists of the heat balance equation, as well as an equation that takes into account the pressure drop in the system at the gas mixture moving through a fixed-bed catalyst

The mathematical model has been developed for the process polymerization propylene proceeding under unsteady conditions due to the toxic effect of methylacetylene on it, leading to decrease of the productivity and quality of polypropylene. Non-stationary function to maintain the productivity at the optimum level obtained during the process in stationary conditions has been proposed. Using this mathematical model allow ones control the process, stabilize it at any time of the polymerization operation. The control scheme of algorithm of this process has been created

This work studies the dynamics of the processes of the ethylene region of a chemical–technological complex (CTC) and the reasons for the change in the activity of catalysts. The functions that take into account the nonstationarity of the processes are selected; their dynamic kinetic models are created; and, on the basis of complete mathematical descriptions, the problems of their optimal control are solved, which ultimately makes it possible to achieve the final goal of preserving the optimal performance of the target products found during the optimization of the processes of the CTC for the stationary conditions under which they pass.

Calculation of propane pyrolysis proceeding in nonstationary conditions caused by coke deposition on the walls of the coil and leading to decrease of propylene productivity of the process has been given.For maintaining the productivity at a constant level the control function that takes into account the dependence of the propylene yield on time, reactor loading and pressure drop along the reactor due to coke formation has been proposed.Entering it into the mathematical model of the stationary process will allow stabilizing the process at any time during the operation of the furnace.

The article offers calculation of the hydration process proceeding under non-stationing conditions, caused by the removal of phosphoric acid from the carrier and leading to a decrease in the productivity of isopropyl alcohol.For maintaining the stable operation of the catalyst the control function has been proposed of which taking into account in the mathematical model of the process allows keeping the productivity of isopropyl alcohol at the constant level.

The catalytic activity of zeolites; A-type, natural clinoptilolite and mordenite modified with Cu and Pd cations via ion exchange was studied in the oxidative conversion of isopropyl alcohol to acetone under the action of oxygen. It is established that the highest activity and selectivity in this reaction is exhibited by natural mordenite containing 0.5% (wt.) Cu and 0.1% (wt.) Pd. The kinetics of this catalytic reaction is studied in the range of: temperature 150-250C, space velocity 10002500 h and different molar ratios of the reactants and inert diluent. Based on the experimental data, a possible stepwise mechanism is proposed and theoretically grounded kinetic model of the process is developed.

The catalytic activity of natural and synthetic mordenites modified with Cu2+, Zn2+, and Pd2+ cations via ion exchange was studied in the oxidative conversion of n-amyl alcohol to valeric acid under the action of oxygen. It is established that the highest activity and selectivity in this reaction is exhibited by mordenite hydrothermally synthesized from kaolinite and containing 3.0 wt % Cu2+, 0.1 wt % Pd2+, and 2.0 wt % Zn2+. The kinetics of this catalytic reaction is studied. Based on the experimental data, a possible stepwise mechanism is proposed, and a theoretically grounded kinetic model of the process is developed.

This paper completes our work on calculation of a chemical-technological complex for coprocessing cracking and pyrolysis gases on the basis of a method developed for optimal design of a chemical-technological complex (CTC) with progressive fulfilment of steps aimed at optimizing the entire complex with consideration of the mutual influence of all its processes. Using the mathematical model of the entire CTC with complete kinetic models of all the selected processes as a basis, its optimization was performed and the optimal regimes with a maximum production capacity for all the target products were selected for these processes. Advisable routes of the motion of byproducts were selected. The resulting closed flowsheet of the chemical-technological complex with notations of all inlet and outlet flows and established couplings of material and recycled flows between all the reactor elements was presented. Using the complete mathematical model and the selected economic criterion and optimization method as a basis, the chemical-technological complex was subjected to global optimization and, as a consequence, the optimally consistent material flows of the entire complex were determined with the resulting maximization of its rate-of-return, i.e., an appreciable increase in the economic efficiency of CTC operation.