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Article
Develo** Additives Based on Russian Coal for the Thermal Hydrocracking of Heavy Tar 4. X-ray Diffraction Study of Coal Composition
The organic mass of coal from different fields is studied by X-ray diffraction. On the X-ray diffraction patterns, the amorphous carbon structure of the coal mainly corresponds to broad intense peaks due to it...
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Article
Analysis of Carbonized Industrial Samples by Scanning Electron Microscopy
The morphology, structure, and mineral composition of carbonized industrial samples are studied by scanning electron microscopy. According to the results, the carbonized samples include particles of different ...
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Article
Morphology and Structure of the Mesophase in Coal Tar Pitch
By scanning electron microscopy, X-ray phase analysis, and X-ray structural analysis, the morphology and structure of the mesophase is studied in the series: coal tar → coal tar pitch → α fraction → coke resid...
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Article
Crystalline Structure of Pitch Produced by the Carbonization of Coal Tar
The carbon structure of coal tar, coal tar pitch, and the α fraction at treatment temperatures up to 1200°C is investigated by X-ray phase and X-ray structural analysis. The following X-ray structural paramete...
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Article
Transmission Electron Microscopy: Study of the Bimetallic Nanoparticle Features
In this paper a comprehensive approach to study the morphology of particles and their structural characteristics, as well as the phase composition of multicomponent nanosystems, which combines the method of el...
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Article
Coking of the α2 Fraction of Coal Pitch and the Structure of Its Coke Residue
The α2 fraction of moderate-temperature coal pitch, which is insoluble in toluene but soluble in quinoline, is obtained by selective solution. The composition, structure, and morphology of its powder particles ar...
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Article
Structure and Texture of Industrial Coke Samples: A Comparison
Samples of baked low-temperature and needle coke are compared by X-ray phase analysis, X-ray structural analysis, analytical scanning electron microscopy, and adsorptional porosimetry. Their structural paramet...
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Article
The Problem of Terminal Differentiation and Apoptosis during Human Keratinocytes’ Cryostorage in Suspension
Cryostorage of human epidermal keratinocytes is an essential stage in living epidermal equivalent’s manufacturing. However, cryostorage of keratinocytes in suspension stimulates processes of terminal different...
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Article
Production of Magnetic Carbon Materials during Decomposition of Iron Salts Deposited on a Porous Carbon Matrix
A method is proposed for producing a magnetic carbon material based on the deposition of a labile iron compound on a carbon matrix and its subsequent thermolysis with the formation of magnetite. The method is ...
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Chapter and Conference Paper
Utilization of Drilling Waste in the Production of Construction Materials
A technology for the disposal of drilling waste is proposed that provides an inexpensive, environmentally friendly construction material that meets the required physical and mechanical characteristics and has...
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Article
Precursors for the Synthesis of Carbon Materials from Coal Pitch
The functional and group composition and structure of β and α2 fractions of medium-temperature coal pitch fraction (in powder form) are investigated by methods such as elemental analysis, electron microscopy, IR ...
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Article
X-Ray Structural Analysis of Vitrinites in Coal at Different Metamorphic Stages
By X-ray structural analysis, the following structural parameters of vitrinite concentrates from coal of different metamorphic stages are determined: the number of carbon atoms in each lamella (nC), the width of ...
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Article
Composition and Structure of Hexane-Insoluble Asphaltenes from Coal Pitch
The functional-group composition and structure of hexane-insoluble asphaltenes from coal pitch are studied. The methods employed are chemical (elemental) analysis, nuclear magnetic resonance (NMR), IR spectros...
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Article
Self-Organization of Hexane-Insoluble Asphaltenes of Coal Pitch
Recently, there has been growing interest in asphaltenes, which are byproducts of petroleum processing and coal liquefaction. However, most data on the macromolecular structure and morphological characteristic...
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Article
Structural Analysis of Needle Coke
Industrial needle-coke samples from different producers are investigated by X‑ray diffraction and scanning electron microscopy. Their structural parameters La and Lc are determined, and their microstructure is in...
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Article
Phase transformations in Cd–Ni nanostructured system at elevated temperatures
Using X-ray diffraction (both in vacuum and in air), derivatomass-spectrometry and thermo-programmed oxidation, phase transformations in nanostructured Cd–Ni system occurring while heating up 720 °C were descr...
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Article
Thermal-Decomposition Products of Hexane-Insoluble Asphaltenes from Coal Pitch
The thermal-destruction products of hexane-insoluble asphaltenes from coal pitch and petroleum asphaltenes are compared. The volatile thermal-decomposition products of the asphaltenes are studied by thermal an...
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Article
The Ion-Exchange Properties of Polymeric Zirconium Phosphate and Zirconium Dioxide
The ion-exchange properties of polymeric zirconium phosphate and zirconium dioxide were studied and their ion-exchange capacities with respect to pyridine bases and pyridinecarboxylic acids were determined. Th...
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Article
Fabrication and physicochemical characterization of graphene oxide derived from thermally expanded graphite
Graphene oxide was obtained from expanded graphite according to the modified Hummers method. The reaction time was significantly reduced (from 24 to 8 h) by applying the expanded graphite in the oxidation proc...
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Article
Electrical Conductivity of Carbon Materials Based on Coal-Tar Pitch with Added Graphite Foam
Attention focuses on the structure and electrical conductivity of carbon materials produced by the carbonization (at 900°C) of coal-tar pitch with the addition of 0.03–0.3% graphite foam and oxidized graphite ...
