Journal of Siberian Federal University: Chemistry

This paper studies the effect of physical fields (i.e. ultrasonic and constant magnetic fields) on structural and energy properties (viscosity, limiting shear stress, pour point, activation energy of viscous flow) as well as kinetic (antioxidant) properties of highly resinous problematic oil. The results were obtained via viscometry, determining of pour point and voltammetric method of oxygen electroreduction. It was shown that the treatment of studied oil by acoustic and magnetic fields lead to decrease in viscosity and temperature parameters. Combined treatment displays an additional reduction of viscosity and pour point

Iulia V. Loskutova

Anastasia V. Morozova

Galina I. Volkova

Journal of Siberian Federal University Chemistry

Effect of Physical Fields on Highly Resinous Oil

物理场对高树脂原油的影响

Using physico-chemical methods of research (elemental analysis, infrared spectroscopy, selective chemical destruction of sulfide and ester bonds, chromatomass spectrometry) the influence of biodegradation processes on the composition and structure of asphaltenes of light oil at the Krapivinskoye deposit was studied. The results of comparative characteristics of initial asphaltenes and asphaltenes after biodestruction are presented. Attention is paid to studying their structural parameters and composition of fragments bound in asphaltene molecules through ester and sulfide bridges. It has been shown that microbial oxidation of asphaltenes of light oil by aboriginal soil microflora (laboratory experiment) occurs through a series of catalytic processes with formation of intermediate products of transformation – alcohols, aldehydes, ketones and fatty acids. It has been established that “grey and ether-bound” fragments in asphaltene molecules of biodegradable oil differ from “bound” compounds in the structure of the original asphaltenes with the qualitative composition of saturated and aromatic hydrocarbons and heteroatomic components

Tatyana V. Cheshkova

Tatyana A. Sagachenko

Raisa S. Min

Dmitriy A. Philatov

Change in the Structure of Asphaltene Macromolecules of the Krapivinskoye Oil Field During Biological Oxidation

克拉皮文斯科耶油田沥青质大分子结构在生物氧化过程中的变化

The analysis of the latest publications on the use of hydrolytic lignin, which is a large-tonnage waste of wood chemical processing, was carried out. In its original form, the hydrolytic lignin is used as fuel, fuel briquettes and pellets, binders and adhesives, organic fertilizers, fillers and enterosorbents. The processing of hydrolytic lignin by chemical and thermochemical methods allows to significantly expand the range of valuable products obtained from it. They are used in chemical, oil and gas and construction industries, metallurgy and other areas. Hydrolytic lignin is most widely used for the production of carbon sorbents. Recently, methods of thermochemical processing of lignin into porous carbon materials with the required texture and strength characteristics as well as into valuable organic products have been developed

Irina G. Sudakova

Alexander V. Levdansky

Boris N. Kuznetsov

Methods of Chemical and Thermochemical Processing of Hydrolytic Lignin

水解木质素的化学和热化学加工方法

A phase-pure mixed oxide of the composition Bi2MgNbTaO9 with a pyrochlore structure was obtained by the ceramic synthesis method. The sample was characterized by the methods of X-ray phase and EDS analyzes, electron scanning microscopy. The electrical properties of samples of different thicknesses were investigated by impedance spectroscopy. The unit cell parameter is a = 1.0544 nm (sp. gr. Fd3m). As a result of modeling the impedance hodographs, an equivalent circuit is proposed that satisfactorily describes the electrical behavior of the sample. Bi2MgNbTaO9 is characterized by a high activation energy of 1.28 eV; moderately high dielectric constant ~62–71 and dielectric loss tangent ~0.003 at 1 MHz and 18 °С. No ionic transfer was detected. The investigated ceramics can be used to create multilayer ceramic capacitors

Nikolay A. Sekushin

Nadezhda A. Zhuk

Dielectric Properties Bi₂MgTaNbO₉

介电性能 Bi₂MgTaNbO₉

А para-chlorophenyl substituent was firstly obtained into the structure of pyridyl-substituted 4-nitrosopyrazole by cyclocondensation of hydrazine hydrate with the corresponding isonitroso-β-dicarbonyl compounds. The structure of previously unknown 3(5)-(4-chlorophenyl)-5(3)-pyridine-(3(4))-yl-4-nitroso-1H-pyrazoles and previously obtained 3(5)-alkyl(aryl)-5(3)-pyridine-(3(4))-yl-4-nitroso-1H-pyrazoles is proved and studied in detail by modern methods of analysis: mass spectrometry, 1H- and 13C NMR-spectroscopy

Darya S. Volkova

Anna S. Kositsyna

Kukushkin Alexey A. Kukushkin

Evgeniy V. Root

Synthesis and Structural Features of 3(5)-alkyl(aryl)-5(3)-pyridyl-4-nitroso-1Н-pyrazoles

3(5)-烷基(芳基)-5(3)-吡啶基-4-亚硝基-1Н-吡唑的合成与结构特征

Polyangelicalactone-graft-polystyrene copolymers were obtained through cationic polymerization. Increasing the portion of styrene units in the copolymers improves the strength properties and increases fragility. Increasing the polyangelicalactone(PAL) content in the copolymers increases the elasticity of the materials obtained. The obtained copolymers are greatly a composition of PAL and polystyrene (PS)with a small content of bonds of styrene-units of 4-alkoxypent‑3-enoic acid.Low α-angelicalactone(AL) content in styrene copolymers improves the oxidative stability of the copolymers. The resulting PAL‑graft-PScopolymers have physical and mechanical properties corresponding to the requirements for general-purpose PS

Konstantin L. Kaigorodov

Synthesis and Properties of Polymers Based on Styrene and α-angelicalactone

基于苯乙烯和α-蒎烯内酯的聚合物合成与性能

The paper presents the investigation of the solid solutions formation in the fluoride system Na5Al3F14-Na3AlF6-K3AlF6 with the addition of LiF. Two local regions were under consideration. The first case concerns the possibility of potassium and sodium cations replacing with lithium in the elpasolite (K2NaAlF6) when LiF is added to the electrolyte. In the second, the effect of lithium fluoride on the chiolite (Na5Al3F14) was studied. The investigation was motivated by the need to control the composition of the electrolyte during the electrolytic production of aluminum. The electrolyte samples were obtained from the initial fluorides under laboratory conditions. Determination of crystal-chemical details of the structure of solid solutions was carried out by the method of full-profile analysis (Rietveld method) on multiphase polycrystalline samples. It was found that the addition of LiF in the structure of elpasolite is accompanied by a gradual substitution of lithium for sodium with the formation, ultimately, of the K2LiAlF6 phase with the lattice parameter a = 8.0779 Å. Potassium is not subject to substitution. No dissolution of LiF in the structure of cryolite (Na3AlF6) was found. It was shown that chiolite does not form solid solutions with LiF upon crystallization

Yulia N. Zaitseva

Solid Solutions in Aluminum Electrolytes with the Participation of LiF

含LiF的铝电解质中的固溶体

The article considers a sorption method for extracting copper ions from a model nitric acid solution based on a solution of electrolytic refining of silver with using sorbents with bis-picolylamine functional groups: Dowex M-4195 and AXIONIT BPA. The possibility of extracting copper to residual concentrations in the solution of less than 10 mg/l is shown. The working capacity of both samples under batch conditions, as well as the dynamic exchange capacity and the full dynamic exchange capacity under dynamic сonditions (column test), are determined. The effect of the flow rate of the solution into the column on the kinetics of the sorption of copper ions on AXIONIT BPA is shown. The possibility of desorption of copper with a solution of 3 %, 5 % NH4OH was investigated, and a two-stage scheme of desorption of copper was tested: 5 % and 10 % with a solution of ammonium hydroxide

Sergey A. Aleynikov

Sorption of Copper Ions from the Nitric Acid Solution of Electrolytic Refining of Silver with Using Chelating Resin Axionit BPA

使用螯合树脂Axionit BPA从银电解精炼的硝酸溶液中吸附铜离子

Firstly, the structure and properties of cellulose aerogels produced from birch-wood and cottoncellulose and of, and products of their sulfation with a non-toxic sulfamic acid-urea complex in an environmentally safe solvent – a mixture of polyethylene glycol and sodium hydroxide are compared. Aerogels based on birch and cotton celluloses have similar values of apparent density (0,071–0,078 г/см3) and porosity (near 95 %). The products of sulfating of cellulose aerogels, in contrast to the originalbirch and cotton celluloses, are completely soluble in water. Their yield and degree of substitution are higher when using birch cellulose aerogel. By drying the dissolved products of sulfating of cellulose aerogels, smooth and transparent films were produced. The structure and morphology of the obtained aerogels and films were established by metods of scanning electron microscopy and atomic force microscopy. Birch cellulose aerogel (BCA) has a reticular microfibrillated porous structure, and cotton cellulose aerogel (CCA) has a spongy structure in which more cavities and cracks are observed than in the case of CCA. The surface of the film of sulfated BCA is formed by particles with a length 100–200 nm and width of 50–70 nm, and the films of sulfated CCA is formed by spherical particles with a diameter of 70–100 nm. The developed methods for obtaining sulfated cellulose films can be used in medicine to oreate anticoagulant coatings

Synthesis and Sulfation with Sulfamic Acid of Aerogels Based on Birch-Wood and Cotton Celluloses

基于桦木和棉纤维素的气凝胶的合成及其与氨基磺酸的硫酸化

The results on the possibility of utilization of post-extractionation residues of green leaves of balsamic poplar (Populus balsamifera L.) by xylotrophic basidiomycetes Fomitopsis pinicola (strain Fp5–15) are presented. It was found that the most favorable for the growth and development of fungi is the residue after the extraction of alcohol-soluble substances. High growth parameters of fungi are observed on this substrate, such as the growth rate, which is 3.9 mm/day and the growth coefficient is 15.6. During the biocoversion of Fp5–15, F. pinicola utilizes up to 30 % of extractive substances and polysaccharides. At the same time, the utilization of easily hydrolyzable polysaccharides is 24 %, difficult-to-hydrolyze‑30 %. Also, in the process of destruction, up to 12 % of lignin substances are disposed of. The decrease in the mass of the substrate after the bioconversion process is 14 %. It is noted that in the process of bioconversion, the substrate is enriched with protein (up to 24 %)

O. O. Mamaeva

Utilization of Poplar Leaves (Populus balsamifera L.) by Bioconversion

杨树叶片（Populus balsamifera L.）的生物转化利用

短名	J. Sib. Fed. Univ. Chem.
Journal Impact	0.31
国际分区	CHEMISTRY, MULTIDISCIPLINARY(Q4)

涉及主题	化学有机化学材料科学生物物理工程类生物化学复合材料化学工程冶金量子力学物理化学催化作用生态学热力学地质学无机化学计算机科学地理色谱法
出版信息	出版商: Siberian Federal University，出版周期: ，期刊类型: journal，开源期刊: 否
基本数据	创刊年份: 2019，原创研究文献占比: 100.00%，自引率:20.00%， Gold OA占比: 0.00%

Journal of Siberian Federal University: Chemistry

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