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Труды сотрудников Института горного дела УрО РАН
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Труды сотрудников Института теплофизики УрО РАН
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Труды сотрудников ЦНБ УрО РАН
Публикации Черешнева В.А.
Публикации Чарушина В.Н.
Каталог библиотеки ИЭРиЖ УрО РАН
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 Найдено в других БД:Каталог книг и продолжающихся изданий (19)Труды Института высокотемпературной электрохимии УрО РАН (2)Труды сотрудников Института химии твердого тела УрО РАН (21)Расплавы (15)
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Поисковый запрос: (<.>K=EXTRACTION<.>)
Общее количество найденных документов : 14
Показаны документы с 1 по 14
1.
Инвентарный номер: нет.
   
   N 52

   
    New hybrid chelating sorbents with grafted 3-aminopropionate groups based on mixed silicon, aluminum, titanium, or zirconium oxides [Electronic resource] / Yu. G. Yatluk, N. A. Zhuravlev, O. V. Koryakova, L. K. Neudachina, Yu. A. Skorik // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 8. - P1836-1841
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of new hybrid organo-inorganic sorbents with the 3-aminopropionate chelating group was synthesized. The synthesis includes the copolycondensation (sol—gel method) of tetraethoxysilane, 3-aminopropyltriethoxysilane, and several modifiers (MeSi(OEt)3, EtSi(OEt)3, Ti(OEt)4, AlONO3, ZrOCl2) followed by carboxyethylation with acrylic acid. The obtained chelating sorbents were characterized by elemental analysis, FT-IR and 1H NMR spectroscopy, and thermogravimetry. The N-carboxylated sorbents have a higher sorption capacity with respect to metal ions (0.5–0.9 mmol g?1, pH 6.3, NH4OAc, 20 °C) than the starting sorbents with the primary amino group (0.05–0.2 mmol g?1) and manifest high selectivity for copper(II) ion extraction

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (8), 1836.pdf
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2.
Инвентарный номер: нет.
   
   N 52

   
    New 1,2,4-triazine-containing podands: synthesis and properties [Electronic resource] / O. N. Chupakhin, G. L. Rusinov, N. A. Itsikson, D. G. Beresnev, O. V. Fedorova, I. G. Ovchinnikova // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 10. - P2308-2313
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method of one-step C-C coupling of 1,5-bis(2,6-dimethylphenoxy)-3-oxapentane (1a) and 1,8-bis(2,6-dimethylphenoxy)-3,6-dioxaoctane (1b) with 3-methylthio- (2) and 3-amino-1,2,4-triazine (3) and 3-aryl-1,2,4-triazin-5-one (6-8) has been described. The reaction of compounds 1a,b with compounds 2 and 3 in the presence of trifluoroacetic acid results in the addition of the dimethylphenoxy group to the unsubstituted C(5) carbon atom of the triazine ring. The reactions of triazinones 6-8 with compounds 1a,b in a mixture of trifluoroacetic acid and organic anhydrides are accompanied by the acylation of the nitrogen atom adjacent to the reaction center and affords bis[(3-R-1-acyl-5-oxo-1,4,5,6-tetrahydro-1,2,4-triazin-6-yl)-2,6-dimethylphenoxy]-3-oxapentane or -3,6-dioxaoctane. The obtained adducts can smoothly be oxidized under mild conditions to form more stable products of nucleophilic hydrogen substitution in the triazine ring. The extraction and transport of Ca2+ and Mg2+ cations through an organic membrane by the compounds synthesized are discussed.

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (10), 2308.pdf
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3.
Инвентарный номер: нет.
   
   M 38

   
    Mass transfer with chemical reaction in conditions of spontaneous interfacial convection in processes of liquid extraction [Text] / S. A. Ermakov, A. A. Ermakov, O. N. Chupakhin, D. V. Vaissov // Chemical Engineering Journal. - 2001. - Vol. 84, № 3. - P321-324
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The paper investigates mass transfer with a chemical reaction in conditions of spontaneous interfacial convection (Marangoni effect). It is shown that a chemical reaction changes the ratio of phase resistance, with the result that the balance of forces at the surface is disturbed and interfacial instability is initiated. The effect of the concentration and the surface activity of a transferred reagent on the conditions of initiation of interfacial instability and the intensity of interfacial convection has been investigated. The determining parameters are the ratio of phase resistances, the surface activity and the concentration of a transferred reagent

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4.
Инвентарный номер: нет.
   
   P 48

    Pervova, M. G.
    Determination of 1,2,3-benzotriazole in aqueous solutions and air by reaction-gas-liquid chromatography [Electronic resource] / M. G. Pervova, V. E. Kirichenko, V. I. Saloutin // Journal of Analytical Chemistry. - 2010. - Vol. 65, № 3. - P276-279 : табл., граф. - Bibliogr. : p. 279 (18 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BENZOTRIAZOLE -- AQUEOUS SOLUTIONS -- AIR -- CHROMATOGRAPHY -- REACTION-GAS-LIQUID CHROMATOGRAPHY
Аннотация: A procedure is developed for the gas-chromatographic determination of 1,2,3-benzotriazole including preliminary derivatization with acetic anhydride in an aqueous solution followed by the extraction the derivative with toluene. The procedure is applied to the analysis of water samples, process solutions for treating metals, air of the working zone, and industrial emissions. Determination limits in water media are 0.01 mg/L and in the air of the working zone, 0.1 mg/m3.

\\\\Expert2\\nbo\\Journal of Analytical Chemistry\\2010, V. 65, N 3, p. 276-279.pdf
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5.
Инвентарный номер: нет.
   
   P 48

    Pervova, M. G.
    Determination of Chloroacetic Acids in Drinking Water by Reaction Gas Chromatography [Electronic resource] / M. G. Pervova, V. E. Kirichenko, K. I. Pashkevich // Journal of Analytical Chemistry. - 2002. - Vol. 57, № 4. - P326-330. - Bibliogr. : p. 330 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A procedure was developed for determining chloroacetic acids in drinking water. The procedure is based on solid-phase extraction followed by the conversion of chloroacetic acids to trifluoroacetic esters and their separation and determination by gas–liquid chromatography with an electron capture detector. Esterification conditions were optimized. The procedure was used for analyzing samples of drinking water

\\\\Expert2\\nbo\\Journal of Analytical Chemistry\\2002, V. 57, N 4, p. 326.pdf
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6.
Инвентарный номер: нет.
   
   S 73

   
    Sorbents based on modified polysiloxanes [Text] / L. K. Neudachina, A. Y. Golub, Yu. G. Yatluk, V. A. Osipova, Yu. A. Berdugin, E. M. Gorbunova, L. V. Adamova, O. V. Koryakova, M. V. Kuznetsov // Inorganic Materials. - 2011. - Vol. 47, № 4. - P435-441 : ил. - Bibliogr. : p. 441 (15 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Organic-inorganic hybrid sorbents based on a polysiloxane modified with amino and thiourea groups have been synthesized for the first time by a sol-gel process. The structure of the sorbents has been determined by X-ray photoelectron spectroscopy and IR spectroscopy. Their thermal stability has been assessed and the mechanism of their degradation has been elucidated. The structural and adsorption parameters of the sorbents have been evaluated. The results demonstrate that the introduction of amino groups into the structure of the polysiloxane yields an effective sorbent for Pb(II) extraction and enables Cu(II) and Zn(II) separation from Co(II) and Ni(II). The thiourea-modified polysiloxane selectively sorbs Bi(III) (0.1-2 M HCl), Pt(IV) (pH 2), and Pb(II) (pH 3). Divalent Co, Ni, Cu, and Zn can be sorbed from alkaline solutions

\\\\Expert2\\nbo\\Inorganic Materials\\2011, v.47, N 4, p. 435.pdf
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7.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis, characterization and application of a new modified polysiloxane with grafted 2-aminoethylpyridine functional groups [Text] / A. S. Zasuhin, L. K. Neudachina, Yu. S. Moskaleva, O. A. Osipova, Yu. G. Yatluk // Modern problems of Surface Chemistry and Physics : International Symposium devoted to the 80th anneversary of Academician O. O. Chuiko, Kyiv, 18-21 May 2010 : abstracts. - Kyiv, 2010. - P350-351 : il.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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8.
Инвентарный номер: нет.
   
   S 70

   
    Sol-Gel Synthesis and Physicochemical Properties of Organosilicon Materials Functionalized by Amino Groups / L. K. Neudachina, N. V. Lakiza, A. V. Pestov, V. A. Osipova, L. V. Adamova, E. M. Gorbunova // Glass Physics and Chemistry. - 2011. - Vol.37, № 5. - С. 537-544
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
"SOL-GEL" MATERIALS -- AMINOPOLYSILOXANES -- SPECIFIC SURFACE AREA
Аннотация: The hybrid materials based on polysiloxane modified by amino groups have been synthesized by the sol-gel method. Aminated polysiloxane has been prepared by the copolycondensation reaction of tetraethoxysilane with gamma-aminopropyltriethoxysilane (APS-1) and through the modification of the product (APS-2) of the hydrolysis of tetraethoxysilane by gamma-aminopropyltriethoxysilane. The composition of sorbents has been confirmed by the elemental analysis and IR Fourier spectroscopy. The high degree of sorption extraction of copper(II), nickel(II), cobalt(II), zinc(II), cadmium(II), and lead(II) ions in the case of their coexistence in an ammonia-acetate buffer solution has been observed for polysiloxanes APS-2. The synthesized surface-modified materials exhibit the highest selectivity to nickel(II) and cobalt(II) ions

\\\\Expert2\\nbo\\Glass Physics and Chemistry\\2011, V. 37, N 5, P.537-544.pdf
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9.
Инвентарный номер: нет.
   
   S 78

   
    Spectroscopic Study of Vanadium(IV) Extraction with Di-2-ethylhexylphosphoric Acid / L. D. Kurbatova, P. A. Slepukhin, D. I. Kurbatov, E. V. Zabolotskaya // Russian Journal of General Chemistry. - 2012. - Vol.82, №6. - С. 1169-1170
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
VANADIUM -- Di-2-ETHYLHEXYLPHOSPHORIC ACID -- EXTRACTION

\\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2012, V. 82, N 6, p. 1169–1170.pdf
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10.
Инвентарный номер: нет.
   
   E 97

   
    Extraction of vanadium (IV) with DI-2-ethylhexylphosphoric acid [Электронный ресурс] / L. D. Kurbatova, P. A. Slepukhin, D. I. Kurbatov, E. V. Zabolotskaya // Phosphorus, Sulfur, and Silicon and the Related Elements. - 2012. - Vol.187, №9. - P1032-1037
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ELECTRONIC SPECTRA -- ESR SPECTROSCOPY -- VANADIUM
Аннотация: It was established with the use of electron and ESR spectroscopic methods that in the presence of sodium sulfate, the extraction of vanadium (IV) with di-2-ethylhexylphosphoric acid takes place by a cation-exchange mechanism giving rise to two complex compounds of vanadium (IV) oxocation with sulfuric and di-2-ethylhexylphosphoric acid anions. The vanadium (IV) oxocation sulfate complex extracted in the solid state was examined with X-ray structural analysis. It was shown that the vanadium (IV) oxocation sulfate complex trihydrate crystallizes in the centrosymmetrical space group to form dimers with bridging sulfate groups

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11.
Инвентарный номер: нет.
   
   I-55

   
    Imidazole-containing chitosan derivative: a new synthetic approach and sorption properties [Electronic resource] / A. V. Pestov, S. YU. Bratskaya, Yu. A. Azarova, Yu. G. Yatluk // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2012. - Vol.61, №10. - С. 1959-1964. - Bibliogr. : p. 1963-1964 (33 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CHITOSAN -- SORBENT -- GOLD(III)
Аннотация: A novel method for the synthesis of a hetaryl containing chelate amino polymer, namely, N (4(5) imidazolylmethyl)chitosan (IMC), with a degree of substitution up to 0.3 was pro posed. The "synthesis in gel" approach involves direct substitution of the hydroxyl group in 4(5) imidazolylmethanol. The structures of these polymers were confirmed by 1H NMR data. For sorption studies, IMC samples were crosslinked with epichlorohydrin and diglycidyl ethers of ethylene glycol and diethylene glycol. The degrees of swelling and sorption properties of the polymers largely depend on the crosslinking agent and the degree of crosslinking. The sorption capacities of IMC for AuIII, PtIV, and PdII ions are higher than those of the nonmodified polymer. The extraction of noble metal ions from chloride solutions becomes more selective with increasing degree of crosslinking. The sorption capacity of IMC for CoII and NiII ions is higher than those of chitosan and its known N heterocyclic derivatives

\\\\expert2\\NBO\\Russian Chemical Bulletin\\2012, 61 (10), 1959-1964.pdf
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12.
Инвентарный номер: нет.
   
   F 33

   
    Features of silicon- and titanium-polyethylene glycol precursors in sol-gel synthesis of new hydrogels [Electronic resource] / T. G. Khonina, A. P. Safronov, M. V. Ivanenko, E. V. Shadrina, O. N. Chupakhin // Journal of Materials Chemistry B. - 2015. - Vol. 3, № 27. - С. 5490-5500. - Bibliogr. : p. 5499-5500 (38 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
MODIFIED SILANES -- MINERALIZATION -- MONOLITHS
Аннотация: The formation of organic/inorganic hydrogels based on silicon and titanium polyethylene glycolates, new biocompatible water-soluble precursors in sol-gel processing, was investigated. The influence of different factors on the gelation process, such as excess of PEG, water molar content, pH of medium, electrolyte additives, was investigated in comparison with silicon-and titanium-glycerol precursors. The specific features of gelation for each type of precursor were revealed. It has been determined that titanium polyethylene glycolates synthesized and used in the excess of PEG formed transparent polymeric hydrogels resistant to syneresis under certain conditions. The titanium polyethylene glycolates synthesized without excess of PEG formed turbid heterogeneous colloidal gels. In the case of silicon polyethylene glycolates the hydrogels obtained were polymeric. Dynamic light scattering was used to confirm the polymeric or colloidal type of gelation. The solid and liquid phases of polymeric silicon- and titanium-polyethylene glycol hydrogels were separated by exhaustive extraction. The solid phase was characterized by combined thermal analysis with simultaneous quadruple mass spectrometry, XRD, IR spectroscopy, and liquid phase-atomic emission spectroscopy. The structural features of polymeric gels were investigated by SEM and TEM methods. The cross-linking density of polymeric hydrogels was evaluated using Flory-Rehner theory based on the mechanical properties of swollen networks of flexible polymeric chains

\\\\expert2\\nbo\\Journal of Materials Chemistry B\\2015. V. 3, N 27. P. 5490-5500.pdf
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13.
Инвентарный номер: нет.
   
   C 55

   
    Choice of optimal conditions for the dynamic concentration of silver(I) ions from complex solutions with sulfoethylated polyaminostyrenes / L. M. Alifkhanova, Y. S. Petrova, S. N. Bosenko [и др.] // Russian Journal of Inorganic Chemistry. - 2021. - Т. 66, № 4. - С. 578-585
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: This work was intended to study the selectivity of silver(I) ion adsorption with sulfoethylated polyaminostyrenes under dynamic conditions. The greatest selectivity of the extraction of silver(I) ions in the presence of copper(II) ions is at pH 6.0 and a solution flow rate of 2 mL/min. The breakthrough curves of metal adsorption were obtained in the joint presence of sorbates from ammonium acetate buffer solution. The dynamic capacities of adsorbents, rate constants of reactions, and 50% sorbate breakthrough times were determined. The silver(I) adsorption selectivity increases with an increase in degree of substitution of polyaminostyrenes. The breakthrough curves were fitted with the Thomas, Adams–Bohardt, and Yoon–Nelson models. For the quantitative desorption of silver(I) ions from the adsorbents, 20.0 mL of 1 M nitric acid is most appropriate.

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14.
Инвентарный номер: нет.
   
   S 98

   
    Synthesis and antimicrobial activity of silicon-titanium-zinc- and silicon-titanium-boron-containing glycerohydrogels / T. G. Khonina, E. Yu. Nikitina, E. V. Shadrina [et al.] // Russian chemical bulletin. - 2021. - Vol. 70, № 5. - P967-974
ББК Г
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Novel pharmacologically active silicon—titanium—zinc- and silicon—titanium—boron-containing glycerohydrogels were synthesized by the sol—gel method using silicon, titanium, zinc, and boron glycerolates as biocompatible precursors. The compositions and structural features of the hydrogels were studied by transmission electron microscopy, scanning electron microscopy, IR spectroscopy, atomic emission spectrometry, and elemental analysis methods. The disperse phase and liquid water—glycerol medium of the hydrogels were isolated by cold exhaustive extraction with ethanol and characterized. The 3D polymeric network of the gels is formed by the products of hydrolysis and subsequent (co)condensation of silicon-/silicon—boron-containing precursors. Titanium and zinc glycerolates undergo no hydrolytic transformations under gelation conditions and exist in the cells of the 3D polymeric network in the form of amorphous nanoparticles that are not linked to the network by covalent bonds. Models of the structures were proposed. The gels are characterized by antimicrobial activity, which is more pronounced for the silicon—titanium—boron-containing gel, and they can be considered as promising drugs for topical treatment prepared by the simple, environmentally friendly, and cost-effective method.

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