Zinfer Ismagilov

• Professor, Academician of Russian Academy
• Diгector at Institute of Coal Chemistry and Material Science, Kemerovo

To improve the efficiency of catalysts for methane tri-reforming, the effect of pretreatment conditions of the Ce 0.2 Ni 0.8 O 1.2 /Al 2 O 3 catalyst on its physicochemical and functional properties was studied. A set of methods (thermal analysis, low-temperature nitrogen adsorption, X-ray phase analysis, electron microscopy, temperature-programmed...

Efficient production of H2 by combined (steam/CO2; steam/O2) reforming of CH4 was comparatively studied over perovskite-derived promoted Ni catalysts. The process performance was improved by regulating the redox and structural properties of the LaNi0.99M0.01O3 catalysts through promotion (M = Pt, Pd, Re, Mo, Sn). The catalysts were synthesized usin...

Hydrogen production from methane with CO2 utilization over exsolution derived NiCu/CeO2 catalysts was studied. To form highly dispersed supported bimetallic NiCu particles the Ce0.75(NiCu)0.25O1.75 catalyst precursors (Cu/Ni molar ratio = 0; 0.004; 0.04; 0.25) were prepared by polymerizable complex method with the following reduction at 800 °C. A c...

The sol–gel template technique makes it possible to synthesize a stable and efficient nickel catalyst based on magnesium-modified cerium oxide Ce0.5Mg0.5O1.5 for the combined steam and CO2 reforming of methane. To stabilize dispersed forms of the active component in the matrix of the support, the catalysts were synthesized by changing the support p...

Hydrogen production from biogas over alumina-supported Ce1−xNixO2−x catalysts was studied in a temperature range of 600–850 °C with an initial gas composition of CH4/CO2/H2O of 1/0.8/0.4. To achieve a high and stable hydrogen yield, highly dispersed Ni catalysts were prepared through the exsolution approach. A solid solution of Ce1−xNixO2−x was fir...

Humic acids (HAs) and fulvic acids (FAs) isolated from brown coals of the Tisul’skoe and Tyul’ganskoe deposits were characterized using ultimate and proximate analyses. The Fourier transform IR and 13С NMR (CPMAS) spectroscopic data showed a significant difference in the structural-group compositions of HAs and FAs. The results of testing the biolo...

Hydrogen production through the bi-reforming of methane over exsolution-derived Ni catalysts has been studied. Nickel-based catalysts were prepared through the activation of (CeM)1−xNixOy (M = Al, La, Mg) solid solutions in a reducing gaseous medium. Their performance and resistance to coking under the reaction conditions were controlled by regulat...

Steam/CO2 reforming of methane was studied at 600–900 °C, molar ratio CO2/H2O 0–2 and contact time 0.04–0.15 s over impregnated Ni/CeO2 catalysts of various compositions. It has been established that with an increase in the Ni content from 2 to 10 wt.%, both the conversion of reactants (X) and the yield of products (Y) increase in the range XCH4 25...

Coal industry methane is a fossil raw material that can serve as an energy carrier for the production of heat and electricity, as well as a raw material for obtaining valuable products for the chemical industry. To ensure the safety of coal mining, rational environmental management and curbing global warming, it is important to develop and improve...

This paper is devoted to the celebration of 75 years’ jubilee of Professor Zulkhair Mansurov In this work, the introduction of modifying additives in the composition of catalysts is considered as an effective mode of improving functional characteristics of materials for two processes of methane conversion into valuable products – methane dehydroar...

Newly emerged highly pathogenic A/H7N9 viruses with pandemic potential are effectively transmitted from birds to humans and require the development of novel antiviral drugs. For the first time, we studied the in vitro and in vivo antiviral activity against A/H7N9 of oligodeoxyribonucleotides (ODNs), which were delivered into the cells in the propos...

This article is devoted to scientific and technical aspects of the direct catalytic oxidation of hydrogen sulfide for the production of elemental sulfur. It includes a detailed description of the Claus process as the main reference technology for hydrogen sulfide processing methods. An overview of modern catalytic systems for direct catalytic oxida...

The stages involved in the evaporation and ignition of brown coal under the influence of nanosecond laser pulses on tablets of brown coal of density 1 g/cm3 and particle size 63 μm were identified. At the first stage volatile substances are released during the pulse, and evaporation, vaporization, and nonlinear multiplication of the luminescence ce...

Autothermal reforming of bioethanol (ATR of C2H5OH) over promoted Ni/Ce0.8La0.2O1.9 catalysts was studied to develop carbon-neutral technologies for hydrogen production. The regulation of the functional properties of the catalysts was attained by adjusting their nanostructure and reducibility by introducing various types and content of M promoters...

The purpose of this work is to present our latest achievements in the design, synthesis and development of a new catalytic microreactor for the processes of selective and continuous synthesis of substances with added value that are used in fine organic synthesis and pharmaceutical industries. In this advanced device, metal nanoparticles are embedde...

Background. Most healthcare-associated infections (HAI) develop due to a colonization of patients and healthcare workers by hospital strains of pathogens. The aim to study was to assess whether the dust within the health facilities can harbor microorganisms acting as a reservoir of HAIs. Materials and methods. Dust samples collected in the air duct...

The samples of humic preparations (HPs) containing macro and trace elements for plant nutrition were obtained based on humic acids isolated from brown coal of the Tisul deposit in the Kansk-Achinsk Coal Basin. The biological activity of the humic preparations was tested under laboratory and field conditions with the use of Iren and Novosibirskaya 8...

A comprehensive study of nitrogen doped carbon nanotubes (N–CNTs) with nitrogen content varying from 0 at.% to 7.3 at.% is reported. A correlation is revealed between the content of pyridine-like nitrogen and the defectivity of the N–CNT bamboo-like structure. A model of graphene layer with defects containing ordered carbon vacancies and pyridine n...

A 5D diffraction imaging experiment (with 3D spatial, 1D time/imposed operating conditions and 1D scattering signal) was performed with a Ni-Pd/CeO2-ZrO2/Al2O3 catalyst. The catalyst was investigated during both activation and partial oxidation of methane (POX). The spatio-temporal resolved diffraction data allowed us to obtain unprecedented insigh...

This study describes the effective attack of oligonucleotides on the viral genome of highly pathogenic H5N1 influenza A virus (IAV) in vivo using for the first time the new delivery system consisting of biocompatible low-toxic titanium dioxide nanoparticles and immobilized polylysine-containing oligonucleotides with the native (ODN) and partially m...

In this work, a series of HK/MCFs-x sorbents consisting of metal organic framework (HKUST-1) and mesocellular foams (MCFs) were prepared using solvothermal method. The samples were characterized by various techniques including XRD, N2 adsorption/desorption, TG, SEM, FT-IR, and water vapor adsorption, respectively. The CO2 adsorption isotherms and a...

Ni-Co/γ-Al2O3 bimetallic catalysts were synthesized by capillary impregnation (CI) and solution combustion methods (SC). Catalysts tested in dry methane reforming (DRM), characterized by XRD, H2-TPR, SEM, small-angle X-ray scattering. Preparation method plays an important role in regulating the textural and morphological properties of catalysts and...

Three Cu-ZSM-5 catalysts having different copper species: 1) isolated Cu²⁺ ions, 2) the structures of Cu²⁺ ions with extra-lattice oxygen (ELO), and 3) the CuO-like nanoparticles, were comparatively studied for their ammonia storage capacity under NH3-Ar, NH3-O2-Ar, and NH3-NO-O2-Ar (SCR-like) feeds. EPR, DR UV-Vis, DRIFT techniques and TPD modes w...

Two series of supported Co-containing catalysts modified with La and Ce oxides were synthesized by solution combustion with different amounts of glycine. Their properties were compared with characteristics of unmodified Co catalyst and modified catalysts synthesized by impregnation in an excess of solution without glycine. XRD, TEM, UV-vis DRS and...

The formation and decomposition of methane hydrate in the mesopores of two polymorphous modifications of Al2O3 and the state of water adsorbed in the mesopores were studied in the work. It is demonstrated that adsorbed water may have several energy states differing from each other in the degree of interaction with pore walls. Methane hydrate may be...

The deep oxidation of DME in a reactor with a supported catalyst and in a microreactor has been studied. Kinetic dependences of DME oxidation were obtained and comparative results are discussed.

In this work, the study of the kinetic dependences of the glow and determination of the threshold characteristics of the ignition of coal of grades long-flame, semi-lean caking, weakly caking, lean and anthracite under the action of microsecond laser pulses was carried out. For the aforementioned coals, three successive stages of ignition were foun...

The component composition of bitumen obtained from brown coal of grade 1B of the Tyulganskoye deposit of the South Ural basin was investigated using destructive O-alkylation with n-butanol. The positive effect of alkylating treatment on the bitumen yield is shown. A number of individual compounds were identified by gas chromatography-mass spectrome...

The purpose of burning any fuel is to obtain thermal energy, the amount of which is judged by the heat of combustion, their most important thermophysical characteristic. In the modern world, the use of coal as a fuel for the production of heat and electricity leads in terms of consumption. This paper presents the results of measuring the highest he...

In this work, a number of industrial samples of needle cokes from various manufacturers were studied. The study of the samples was carried out by methods of X-ray diffractometry and analytical scanning electron microscopy. The parameters of their crystal structure were determined, and the features of their microstructure were investigated. The diff...

To create new nanosized catalysts for oxidative transformations of sulfur compounds of thiophene series, monometallic catalysts based on carbon nanotubes M/CNTs (M = Ce, Cu, Mo) were prepared with a variation of the synthesis method. The incipient wetness impregnation method, adsorption, and precipitation methods were applied for active component i...

Gamma-valerolactone (GVL) is a starting reagent for the production of fuels and fine chemicals. GVL can be used as a solvent, as part of an electrolyte, for the production of chemicals and fuel additives. It can be converted to liquid fuels such as valerian biofuels, liquid alkanes or valuable chemical intermediates such as 1,4-pentanediol or alkyl...

Fossil coals of the Kuznetsk Basin of varying degrees of metamorphism were studied by the method of electron paramagnetic resonance. It is shown that in the series from brown coal to anthracite, the g-factor of the EPR signal decreases, due to the aromatization of the carbon framework and a decrease in oxygen-containing and hydrogen-containing frag...

The work is devoted to the investigation of the porous structure of carbon sorbents prepared on the basis of long-flame, gas, low-caking and lean coal of Kuzbass. Carbon sorbents were obtained by alkaline activation with potassium hydroxide at 800 °C and a KOH/coal (RKOH) ratio of 0.5 g/g. Using the method of low-temperature nitrogen adsorption (an...

The paper presents the results of petrographic analysis of five samples of brown coals from the following deposits: Itatskoye, Munayskoye, Arkharo-Boguchanskoye, Kangalasskoye, Baganuur (Mongolia). It was found that the brown coal sample from the Itatskoye deposit (R o, r = 0.388%) has the lowest vitrinite reflectance, while the brown coal from the...

In this work, the structural parameters of vitrinites of coal of various degrees of metamorphism were investigated by X-ray diffraction methods. Vitrinite concentrates were obtained from coal of the Kuznetsk Basin by the method of fractional analysis of coals, according to which the studied fuel is stratified into fractions in liquids of different...

The presented work is devoted to the study and development of a technique for measuring the parameters of the porous structure of fossil coals in Kuzbass by the adsorption method on an ASAP 2020 analyzer “Micromeritics”. The conditions for sample preparation of samples were selected, which make it possible to record reproducible isotherms of low-te...

An overview of russian and foreign methods and approaches to control carbon-containing dust in the atmospheric air in the influence zone of coal mining and processing enterprises is presented in this paper. The main composition of suspended substances (coal dust), entering in the atmosphere in the processes of coal mining and processing, consists o...

The article discusses the main methods of capturing carbon dioxide used in the processes of cleaning flue gases. The paper presents some schemes for the extraction of CO2, shows their advantages and disadvantages. The adsorption method for extracting carbon dioxide with commercial sorbents and activated carbons obtained on a coal and plant basis is...

The results of a study of the chemical and technological properties of low-metamorphosed coals of the Kuznetsk basin of long-flame (L), long-flame-gas (LG) and gas (G) technological grades. Coal samples are low-sulfur, medium-ash with a low ash basicity index, are characterized by a rather significant yield of semi-coking resin, gaseous and volatil...

The paper presents a technique for measuring the parameters of the porous structure of carbon sorbents obtained on the basis of Kuzbass fossil coals using an ASAP 2020 “Micromeritics” analyzer. The conditions for sample preparation were selected, which make it possible to record reproducible isotherms of low-temperature adsorption-desorption of nit...

A brief analysis of the existing technical solutions for the purification of gases from hydrogen sulfide is carried out. The huge volume of such emissions and the lack of ready-made solutions for mini-gas processing plants and mini-refineries determine the relevance of the development of environmentally reliable, efficient and compact technologies...

In this work, the objects of the study were CWC coals (coking weakly caking coals). The samples were characterized by technical analysis, which showed that the coals are close in ash content (Ad = 3.4-8.4%) and the yield of volatiles (V daf = 18.4-21.4%). Petrographic analysis determined the vitrinite reflection index (Ro, r), which showed that the...

The paper presents the results of a study of changes in the textural and physicochemical properties of the carbon sorbent surface after oxidative modification with an ozone-oxygen mixture. For the study, we used a carbon sorbent sample obtained on the basis of long-flame coal. It is shown that oxidative modification with the mixture leads to an inc...

To determine the optimal reaction conditions of bi-reforming of methane thermodynamic analysis of reaction was performed. The effects of process variables, such as temperature (T = 500–1000°C), pressure (P = 1–30 atm), and feed composition CH 4 /CO 2 /H 2 O on the product distribution were studied. It was shown that to maximize the conversion of re...

Pilot tests of low-temperature catalytic reduction of sulfur dioxide in realistic conditions (technological gases of Vanyukov furnace) of sulfur recovery unit at Copper Plant of Polar Division of JSC “Norilsk Nickel” have been carried out. It has been demonstrated that the developed CuCr catalyst provides sulfur recovery not less than 90% at GHSV-2...

The paper presents the results of a study of the morphology of carbon sorbents from Kuzbass coal. Carbon sorbents were obtained by chemical activation of the initial coal with potassium hydroxide at a temperature of 800 °C and a KOH/coal ratio of 1 g/g. It was shown that alkaline activation has no significant effect on the ash content of the obtain...

A comprehensive study of the functional-group composition and structure of hexane-insoluble asphaltenes of coal tar pitch was carried out by methods of chemical elemental analysis, nuclear magnetic resonance (NMR), IR spectroscopy, scanning electron microscopy, X-ray diffraction (XRD), thermal analysis in combination with chromatography-mass spectr...

Coals are heterogeneous in nature, and they most often combine different amounts of three macerals-vitrinite, liptinite and inerinite. Vitrinite, which is responsible for the caking capacity of coal, solubility in organic solvents, mechanical properties, etc., is of decisive importance for the technological properties of coal raw materials. This pa...

The paper investigates the textural characteristics of carbon sorbents prepared by alkaline activation of brown coal from the Tisul deposit. The texture characteristics (specific surface area-S BET , m ² /g, total pore volume-VΣ, cm ³ /g, mesopore volume-V me , cm ³ /g and volume of micropores-Vmi, cm ³ /g) of carbon sorbents were measured on an AS...

The paper presents the results of a study by IR spectroscopy of inertinite concentrates isolated from humus coals of various stages of metamorphism. It was revealed that in the studied samples there is a rather significant intensity of absorption bands characteristic of aromatic structures (D3040, D1620, D900-750 cm ⁻¹ ). To characterize the chemic...

The kinetic characteristics of the glow of coal during exposure to microsecond laser pulses have been investigated. It is shown that the glow intensity increases from the moment of exposure to the laser pulse, the maximum glow intensity falls on ∼ 110-120 µs• i.e. at the end of the laser pulse. In the submillisecond range, a decrease in the glow in...

The article presents the results of a study of the influence of ash content of coal on the qualitative characteristics of their IR spectra. Comparative analysis of the IR spectra of the initial and demineralized bituminous coals showed that the mineral components present in their composition in the form of silicates, clay minerals, and carbonates l...

The catalytic properties of Pd/Ti0.95Ce0.05O2, Pd80Zn20/Ti0.95Ce0.05O2 and Pd/TiO2 coatings on the inner wall of capillary microreactor were studied in the selective hydrogenation of 2-methyl-3-butyn-2-ol (MBY). The effect of initial MBY concentration, hydrogen partial pressure, reaction temperature on activity and selectivity to MBE was studied fo...

The effect of cobalt oxide content on the activity of NiO-Co2O3/γ-Al2O3 catalyst was investigated in process of dry reforming of methane (DRM) to synthesis gas. It was found that among the studied catalysts the highest activity is shown by the NiO-Co2O3/ γ-Al2O3, where methane conversion is 89%. It was determined by the scanning electron microscopy...

TiO2 (rutile) samples with a hierarchical 3D nanostructure of the particles were synthesized by two methods: liquid hydrolysis of TiCl4 at 90 °С and atmospheric pressure; hydrothermal synthesis from TiCl4 at 160 °С and different [H2O]/[Ti] ratios. The effect exerted by conditions of the synthesis and post-treatments on the crystallite size, morphol...

Hydrogen production through autothermal reforming of methane (ATR of CH4) over promoted Ni catalysts was studied. The control of the ability to self-activation and activity of Ni-M/Ce0.5Zr0.5O2/Al2O3 catalysts was achieved by tuning their reducibility through the application of different types (M = Pt, Pd, Re, Mo or Sn) and content (molar ratio M/N...

Metal-carbon materials M/CNTs (M = Ce, Сu, Mo) were synthesized by incipient wetness impregnation and their physicochemical characteristics were studied using various methods (inductively coupled plasma optical emission spectrometry, thermal analysis coupled with mass spectrometry, low-temperature nitrogen adsorption, X-ray diffraction and structur...

We have studied laser ignition (1064 nm, 120 μs) of mixtures of lignite coal (brown coal) particles of size ≤0.1 mm and pentaerythritol tetranitrate (PETN) additives. We established that as the amount of PTEN additives increases in the range 0–50 wt.%, the critical ignition energy density of the mixtures decreases monotonically from 2.9 to 2.0 J/cm...

In this paper, one studied the effect of pulsed laser radiation (1064 nm, 120 μs) on lignite. The method of mass spectrometry was used to analyze the formed gaseous reaction products after the exposing of coal samples to the laser radiation. The pressed out of the pre-milled coal particles tablets were used as samples. In the mass spectra of the re...

Abstract—The possibility of using readily available materials—Tyul’gansk lignite, Tisul’sk lignite (and its nat- urally oxidized form), humic acids, and coal residues after humic-acid extraction—in the sorption of copper, cobalt, manganese, and zinc cations from aqueous solutions is considered. Their effectiveness as sorbents is assessed by means o...

The effect of TiCl₄ hydrolysis temperature on the structural, textural and morphological properties of the resulting rutile and on the changes of these properties upon calcination was studied. The XRD, Raman spectroscopy, mercury porosimetry, BET, SEM and TEM studies have revealed that TiO₂ rutile has a hierarchical 3D-architecture. The obtained na...