Igor Sedov

Igor Sedov
Russian Academy of Sciences | RAS ·  Institute of the Problems of Chemical Physics

PhD in Chemistry

About

132
Publications
36,283
Reads
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371
Citations
Citations since 2016
67 Research Items
353 Citations
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
2016201720182019202020212022020406080
Additional affiliations
January 2015 - present
Russian Academy of Sciences
Position
  • Head of Department
September 2012 - present
Lomonosov Moscow State University
Position
  • Lecturer
Education
September 2005 - June 2006
Nizhny Novgorod State University
Field of study
  • Chemistry

Publications

Publications (132)
Article
The possibility of using coalbed methane to produce methanol is assessed. Methanol can be obtained from methane both by direct partial oxidation and from synthesis gas formed through the oxidative conversion of methane. Thermodynamic analysis of coalbed methane conversion was carried out to determine the conditions for obtaining synthesis gas with...
Article
Full-text available
The kinetic patterns of the attainment of the equilibrium product composition in non-catalytic processes of partial oxidation and of steam and carbon dioxide reforming of hydrocarbons in the temperature range 1400–1800 K, characteristic of these processes, were analyzed. The need for such analysis is caused by the rapidly increasing consumption of...
Article
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An analysis of the literature data indicates a wide front of research and development in the field of the use of methane–hydrogen mixtures as a promising environmentally friendly low-carbon fuel. The conclusion of most works shows that the use of methane–hydrogen mixtures in internal combustion engines improves their performance and emission charac...
Article
Full-text available
Non-catalytic partial oxidation of methane in matrix reformers offers the possibility of producing hydrogen directly at sites of its consumption, in particular from local bioresources and non-traditional fossil hydrocarbons. The kinetics simulation of the process shows that it proceeds in two stages. In the flame zone, in the presence of oxygen, al...
Article
The paper considers the growing importance of gas chemistry for the world economy and the related necessity of developing new, particularly noncatalytic technologies for the conversion of natural gas and other hydrocarbon gases into chemical products. The available and promising noncatalytic processes of their conversion into syngas as well as the...
Article
A kinetic and thermodynamic analysis of CO2 utilization through non-catalytic dry (carbon dioxide) reforming of light hydrocarbons C1– C4 in the temperature range of 1400–1800 K is performed. The sequence of stages of transformation of hydrocarbons into syngas and corresponding time intervals are determined. In this temperature range, methane is su...
Article
Full-text available
The basic principles of a new technology of non-catalytic oxidative reforming of hydrocarbon gases into syngas and hydrogen, based on the combustion of rich hydrocarbon-air or hydrocarbon-oxygen mixtures stabilized by the surface of a permeable matrix, are presented. The kinetics of the process, the prospects for its technological implementation an...
Article
Low energy density in agricultural or biotechnological raw materials dictates the need for their local processing. Small-scale agricultural products or waste processing plants can`t profitably use technologies common in large-scale petrochemistry, including the complex and expensive process of steam reforming of biogas into syngas for its subsequen...
Article
This study demonstrates the possibility and good practical prospects of a principally new type of noncatalytic matrix conversion of natural gas and associated petroleum gas to syngas. Matrix reformers can operate on various types of oxidizers, such as air, enriched air, and oxygen, thereby producing syngas with the desired nitrogen content, includi...
Article
Separation of olefin/paraffin mixtures is an important problem. The use of a gas—liquid membrane contactor is an attractive alternative to traditional power-consuming cryogenic distillation methods. The paper deals with the separation of ethylene from its mixture with ethane (component ratio 19/81 vol %, respectively) using an aqueous silver nitrat...
Article
Full-text available
Trials of oxidative cracking of ethane—propane—n-butane mixtures were performed on an installation with the productive capacity with respect to the gaseous feed of 5 m3 h−1. Ethylene, CO, and hydrogen are the major products of oxidative cracking of oil refinery gases; their total yield can exceed 90%. The yield of ethylene and CO is determined by t...
Article
The effect of carbon monoxide and hydrogen additions on partial gas-phase high-pressure oxidation of methane was studied experimentally. The maximum permissible concentrations of these components in the recycled gas were determined. The optimum multiplicity of the hydrocarbon gas recycling in the process was substantiated.
Article
The conversion of natural gas to syngas is a key and most expensive stage of modern gas chemical technologies. As a promising alternative to existing technologies, a non-catalytic matrix conversion of natural gas to syngas was proposed. However, the reaction products, in addition to CO and H2, also contain unreacted methane, CO2 and acetylene. The...
Article
The kinetics of ternary copolymerization of СО2 with epoxides, namely, propylene oxide, butene oxide, and cyclohexene oxide, carried out in the presence of a binary catalytic system is studied for the first time. The rates of reactions are determined by measuring СО2 uptake in the course of time. Dependences of the rate of reaction on the compositi...
Article
The prospects for creating low-volume-production technologies for reforming of natural and associated gases to liquid carbon-containing products based on the use of cheap nitrogen-rich synthesis gas have been analyzed. Processes for obtaining cheap nitrogen-rich synthesis gas and sustainable high-performance synthesis of liquid products based on it...
Chapter
Full-text available
There is an acute need in more wide use of huge world resources of natural gas as a petrochemical raw material. But solving of this global task is hardly possible without developing of more effective methods for conversion of natural gas into the most important gas–chemical intermediate—syngas. This paper describes recent results on a principally n...
Article
Processes of catalytic homocondensation of propanal and its cross-condensation with ethanal and methanal in the presence of aniline and amino acids have been studied. The dependence of the conversion of the reactants and selectivity of the homo/heterocondensation process on the catalyst nature and temperature has been revealed. It has been shown th...
Article
This review analyzes the studies and developments of technologies based on the use of supercritical fluids for the micronization of polymer particles and the formation of efficient powder polymer coatings. Potential advantages of supercritical fluid technologies which combine different stages of formation of powder coatings in a unified flowsheet a...
Article
Prospects for the development of technologies for natural gas processing to obtain synthetic fuels and chemical and petrochemical products are considered. Comparative analysis of the existing commercial technologies that should be upgraded to enhance the energy efficiency and expand the range of products and of the newly developed innovation techno...
Article
Flowsheets based on the results of experimental studies and detailed kinetic modeling were suggested for oxidative cracking of oil refinery gas components to obtain ethylene, CO, and hydrogen. The calculations show that oxidative cracking alone does not allow production of ethylene and СО in ratios required for the further catalytic carbonylation a...
Article
Effect of hydrogen addition at [C2H6]/[H2] ratios of 10–0.05 on the oxy-cracking of ethane was experimentally studied. It was shown that small additions of hydrogen have nearly no effect on the process rate. With the concentration of added hydrogen increasing at temperatures of up to ~650°C, the contributions from the reactions of oxidation of both...
Article
Equilibrium distribution of oxidation products was calculated for the system СН4 + ψО2 → products at 0.5 < ψ < 1.0 and temperature of 900–1700 K, with the existence of phase transitions in the system taken into account. Two regions are conditionally distinguished: I, at ψ > 0.6 and temperatures higher than 1000–1200 K (depending on ψ), when there i...
Article
We elaborated a synthetic approach to a new family of PNP ligands that involves assembling sequential molecules based on the rigid 5,6-dihydrodibenzo[c,e][1,2]azaphosphinine backbone (−Z−). This approach allowed us to obtain PNP-type ligands of the general formula Ar2P–Z–Ar′ (Ar, Ar′ = Ph, o-MeOC6H4) with high yields and without the formation of PP...
Article
Full-text available
New possibilities for the utilization of associated petroleum gases (APG) and monetization of small-scale and remote Natural Gas resources by power generation and chemicals production are considered and tested. One possibility is the oxy-cracking of APG. This technology allows selective transformation of heavier hydrocarbons that have low octane (m...
Article
An original approach to α-olefin oligomerization as well as novel thermally stable zirconocene catalysts for use in such reactions has been elaborated. The method reported allows the achievement of fractions of lightweight α-olefin oligomers up to 90% yields without considerable formation of byproducts like internal alkenes, alkanes, and higher oli...
Article
This paper presents a multipurpose filterless technology based on an original principle for the separation of solid and liquid phases to perform various processes involving suspended solid particles (including hydrogenation, Fischer–Tropsch, and some other processes) in slurry reactors. The main problems related to the operation of slurry reactors...
Article
Full-text available
This paper analyses alternative routes for production of chemicals from different hydrocarbon gases by their direct, without syngas production, oxidative conversion to oxygenates or ethylene. Main of these routes are direct oxidation of methane to methanol (DMTM) and selective oxy-cracking of heavier natural or associated petroleum gas components w...
Article
Different variants of preconditioning of wet and associated petroleum gases and controlling the characteristics of the resulting fuel gases have been considered. Introduction of an additional step of preliminary oxidative conversion (prereforming) of natural and associated petroleum gases makes it possible to oxidize selectively the “heavy” low-oct...
Article
The scientific and technological bases of creation of commercial superhydrophobic materials and coatings on the basis of nanotechnologies, the characteristics and specifications of marketable superhydro-phobic products in connection with the areas of practical applications, and the current state and prospects of development of their markets in the...
Article
The matrix conversion of natural gas into synthesis gas, in which the autothermal oxidation occurs in the surface combustion mode in a cavity of a closed three-dimensional matrix made of a gas-permeable material, was studied experimentally. The specifi c volumetric productivity of such converters considerably exceeds that of traditional types of co...
Article
Full-text available
An efficient procedure for the synthesis of tris(cyclopentadienyl)zirconium tetrakis-(pentafluorophenyl)borate [Cp3Zr][B(C6F5)4] was suggested based on the reaction of Cp4Zr with [Ph3C][B(C6F5)4]. The synthesized compound was characterized by IR and NMR spectroscopy.
Article
The growing role of natural gas and, consequently, gas chemistry in the economy of the 21st century requires the formation of new gas chemical processes, more flexible in relation to raw materials and end products and profitable even for fine chemicals. Basic research and development conducted at the RAS Institute of Problems of Chemical Physics jo...
Article
Full-text available
The reactions of components of the catalytic systems (C5H5)4Zr–MAO and (C5H5)4Ti–MAO in the absence and in the presence of the monomer were studied in order to obtain information on the mechanism of polymerization and copolymerization of ethylene. It was shown that the reactions accompanied by a change in the coordination mode of the ligands in the...
Article
An original inertial principle of solid and liquid phase separation and the construction of a slurry reactor system on this basis are investigated. A continuous operation reactor system ensures the presence of catalyst in the reaction mixture stays nearly constant while a minimum is withdrawn with the reaction products. The results of hydraulic tes...
Article
Full-text available
Despite the significant progress in industrial GTL technologies, even the world class GTL plants have only a marginal profitability. One of the main reasons is the high expenditures for syngas production. Therefore, there are no expectations of a significant increase of traditional GTL in the nearest future. The paper discusses two alternative poss...
Article
Full-text available
Traditional Fischer-Tropsh synthesis for the conversion of gas into liquids for fuels and chemicals is uneconomic for many stranded natural and remote gas sources. This review presents platinum group metal (pgm)-catalysed carbonylation as the basis of a new generation of alternative GTL processes to produce petrochemical products from hydrocarbon g...
Article
Full-text available
Possibility of hybrid catalytic systems for ethylene dimerization and copolymerization including Ti (On-Bu)(4), (C5H5)(4)Zr, and methylaluminoxane formation has been proved. Properties of copolymers formed in the presence of these systems were studied. It was shown that the main advantage of new catalytic systems is their flexibility that allows th...