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Article
Controlling the Sensitivity of Pentaerythritol Tetranitrate to Visible Laser Radiation by the Addition of ZnO:Ag Nanopowder
The laser initiation threshold energy densities (the laser sensitivity) of pentaerythritol tetranitrate (PETN) containing a nanostructured zinc oxide powder doped with silver (ZnO:Ag) are studied in the articl...
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Article
Fractal Analysis of the Pore Structure of Lignite
The pore structure of lignite samples from different fields are investigated by the low-temperature adsorption of nitrogen. For all the samples, the specific surface varies from 1 to 3 m2/g, while the pore space ...
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Article
Texture of Bituminous Kuznetsk Basin Coal
The specific surface and porosity of bituminous coal (rank Zh) are studied. The textural characteristics of Kuznetsk Basin coal are determined by various methods: for example, the specific surface by the Bruna...
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Article
Chemical Activation of Lignite and Long-Flame Coal to Produce Magnetic Sorbents
Sorbents are produced from Barandatsk lignite by single-stage chemical activation using a mixture of ZnCl3 and FeCl3 and from Egozovo–Krasnoyarsk coal by two-stage chemical activation (activation by KOH followed ...
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Article
Determining the Composition and Particle Size of Coal Dust by Dynamic Light Scattering
The physicochemical properties of coal dust from fine filters in the degassing system of a Kuznetsk Basin mine are studied. The dust sample is investigated by atomic-emission spectroscopy, IR spectroscopy, dyn...
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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
Composite Sorbents Based on Lignite Semicoke and Manganese Oxides
The creation of mixed sorbents with the benefits of both sorptional purification by activated carbon and oxidative purification by oxide catalysts is of great interest today. A possible catalyst is manganese d...
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Article
Morphology and Electrical Capacitance Characteristics of Nanostructured MnxOy/MWCNT Composites
Reducing potassium permanganate by a carbon matrix (multiwalled carbon nanotubes (MWCNTs)) in aqueous solutions, we have obtained MnxOy/MWCNT nanostructured composites (NSCs). The morphology and texture of the MW...
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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
Raman Characteristics of Kuznetsk Basin Coal and Coal-Based Sorbents
Coal samples and the sorbents derived from them are investigated by Raman spectroscopy. A correlation is established between the formation of a developed sorbent surface by the leaching of coal and the degree ...
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Article
Sorption of Cationic and Anionic Pollutants by Derivatives of Kuznetsk Basin Coal
Carbon sorbents are derived from Kuznetsk Basin D, G, SS, and T coal by alkali activation. Their specific surface is estimated. The elemental composition of the sorbents is determined by X-ray fluorescent micr...
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Article
Sorption of Organic Compounds by Carbon Sorbents from Kuzbass Coals
Carbon sorbents are obtained from Kuznetsk Basin coal by alkali activation. Their porous structure is established, and their sorptional activity in the extraction of organic pollutants and petroleum products i...
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Article
Influence of the Demineralization of Naturally Oxidized Coal on Sorbent Texture
The influence of preliminary demineralization of coal by aqueous solutions of hydrochloric and hydrofluoric acid on the texture of sorbents produced by thermolysis in the presence of potassium hydroxide is inv...
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Article
Porous Structure of Semicoke Based on Slightly Metamorphosed Coal
Low-temperature pyrolysis of slightly metamorphosed D, DG, and G coal in a Fisher retort produces semicoke, whose specific surface, total pore volume, micropore volume, and mesopore volume are determined. The ...
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Article
Investigation of the structure and dispersion of photoactive nanocrystal TiO2 powders
Effect of the pH in the synthesis of ammonium titanate gel and the temperature of xerogel dehydration on the phase composition, degree of crystallinity, and dispersion of photoactive TiO2 powders is investigated....
