Relevant bibliographies by topics / KU-2×8

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'KU-2×8'

Author: Grafiati
Published: 9 July 2021
Last updated: 1 February 2022

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Journal articles on the topic "KU-2×8"

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Bobylev, A. E., V. F. Markov, L. N. Maskaeva, and A. Yu Chufarov. "Composition, structure, and functional properties of organomineral composite sorbents KU-2×8-ZnS and KU-2×8-PbS." Russian Journal of Applied Chemistry 87, no. 5 (May 2014): 572–78. http://dx.doi.org/10.1134/s1070427214050061.

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Jumadilov, T. K., B. Totkhuskyzy, L. K. Yskak, and J. V. Gražulevicius. "EXTRACTION OF YTTRIUM IONS BY INTERPOLYMER SYSTEMS BASED ON INDUSTRIAL IONITES." Chemical Journal of Kazakhstan 73, no. 1 (March 14, 2021): 134–41. http://dx.doi.org/10.51580/2021-1/2710-1185.14.

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The extraction of yttrium ions by interpolymer systems based on industrial ionites: KU 2-8 cationite and AB-17 anionite was studied. The dependences of the yttrium content in the aqueous medium after sorption by the interpolymer system were studied KU 2-8:AB17-8 depending on the time, the degree of binding of the polymer chain (with respect to yttrium ions) by the initial ionites and interpolymer systems KU 2-8: AB-17-8. The maximum content of yttrium ions in the aqueous medium after sorption is observed at ratios of 3:3 and 4: 2 and the duration of remote interaction is 88 hours. At the same time, the content of yttrium in the aqueous medium after sorption is 60 mol.% and 56.4 mol.%, respectively. High values of the degree of binding of the polymer chain with respect to yttrium are observed at the ratios KU 2-8: AB-17-8=3:3
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Kotova, D. L., T. A. Krysanova, N. V. Domareva, and Yu A. Cherenkova. "Exchange equilibrium in the H-sulfocationite KU-2 × 8-phenylalanine-histidine system." Russian Journal of Physical Chemistry 81, no. 1 (January 2007): 108–11. http://dx.doi.org/10.1134/s0036024407010207.

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Zauer, E. A. "A microcalorimetric study of mercury(II) sorption on KU-2-8 sulfocationite." Russian Journal of Physical Chemistry A 81, no. 5 (May 2007): 779–80. http://dx.doi.org/10.1134/s0036024407050226.

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Dmitriev, G. S., A. V. Terekhov, S. N. Khadzhiev, and L. N. Zanaveskin. "Specific features of solketal synthesis on KU-2-8 cation-exchange resin." Russian Journal of Applied Chemistry 89, no. 1 (January 2016): 45–50. http://dx.doi.org/10.1134/s1070427216010079.

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Romanova, T. A., E. V. Vishnyakova, and E. V. Kachalkova. "Regeneration of KU-2-8 resin with precipitation baths from viscose manufacturing." Fibre Chemistry 16, no. 6 (1985): 386–89. http://dx.doi.org/10.1007/bf00546249.

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Kozlova, Marina M., Artem E. Bobylev, Larisa N. Maskaeva, Vyacheslav F. Markov, and Maxim I. Smolnikov. "Catalytic oxidation of cation exchanger KU-2×8 with an aqueous solution of hydrogen peroxide." Butlerov Communications 58, no. 5 (May 31, 2019): 54–61. http://dx.doi.org/10.37952/roi-jbc-01/19-58-5-54.

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During the operation of nuclear power plants, spent ion-exchange resins are formed, which are heterogeneous radioactive low-level waste in the form of particles from a cross-linked organic polymer. Such resins may not always be regenerated. Therefore, the disposal of spent ion exchange resins is currently one of the primary problems at nuclear power plants. Conventional technologies for the processing of waste resins are relatively expensive. In addition, there are difficulties with transportation and storage of waste, and the disposal of spent ion exchange resins is a complex process. In the present study, an attempt has been made to solve the problem of spent ion-exchange resins utilization on example of the sulfonic acid cation exchanger’s KU-2×8 oxidative degradation with the Fenton reaction. The decomposition of the cation exchanger was carried out with 20% hydrogen peroxide in the temperature range 323-353 K in the presence of a catalyst – low concentration copper(II) sulfate (0.001-0.009 mmol/l). The influence of process temperature and catalyst concentration on the reaction rate was estimated. When determining the rate of the cation exchanger KU-2×8 heterogeneous oxidation reaction with hydrogen peroxide in the presence of a catalytic additive, the spherical shape of the sorbent granules, the surface area of which changed during reaction, was taken into account. It was shown that with a reaction temperature increasing from 323 to 353 K, the rate constant of cation exchanger's oxidative decomposition have increased by a factor of 20-37. The activation energy values of the sulfonic acid cation exchanger's KU-2×8 decomposition with hydrogen peroxide in the presence of copper(II) sulfate are 89.7-115.2 kJ/mol, which indicates that the process is in the kinetic mode. It was established with electron-microscopic studies that the beads of the cation exchanger KU-2×8, when decomposed in H2O2 solution in the presence of a catalyst can stick together, change their shape and volume, and their surface becomes covered with cracks. The studies performed showed almost complete catalytic decomposition of cation exchanger KU-2×8 in a hydrogen peroxide solution at 323-353 K after 420-220 minutes, which allows accelerating the oxidation at relatively low temperatures.
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Kuvaeva, Z. I., and E. G. Karankevich. "Sorption of peptides and amino acids by ion exchangers." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 57, no. 3 (September 5, 2021): 278–85. http://dx.doi.org/10.29235/1561-8331-2021-57-3-278-285.

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Sorbtion of dipeptides leucylisoleucine, threonylthreonine and their monomeric amino acids leucine and threonine by anionite AV-17 and cationite KU-2-8 in a wide range of equilibrium concentrations has been studied. It was shown that the presence of hydrophilic OH-groups in the threonine molecule promotes superequivalent sorbtion of threonine on the cation exchanger. The presence of an OH-groups in the side chein of the dipeptide practically does not affect the sorbtion an KU-2-8. Sorbtion of dipeptides on AV-17-8 is higher in comparison with their monomeric amino acids.
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9

Slavinskaya, G. V. "Influence of Humus Acids on Physicochemical Features of KU-2×8 Cation Exchangers." Russian Journal of Applied Chemistry 77, no. 2 (February 2004): 209–14. http://dx.doi.org/10.1023/b:rjac.0000030352.45920.db.

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10

Jumadilov, Talkybek, Laila Yskak, Aldan Imangazy, and Oleg Suberlyak. "Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers." Materials 14, no. 13 (June 23, 2021): 3491. http://dx.doi.org/10.3390/ma14133491.

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Many technological solutions contain valuable components as waste and can become an additional source of rare-earth elements to meet the needs of modern production. The development of technologies based on commercially available and cheap sorbents reveals the possibility for rare earth recovery from various solutions. This paper provides research on using a combination of KU-2-8 and AV-17-8 ion exchangers in different molar ratios for cerium ions sorption from its nitrate solution. The mutual activation of the ion exchangers in an aqueous medium provides their transformation into a highly ionized state by the conformational and electrochemical changes in properties during their remote interaction. The ion exchange dynamics of solutions were studied by the methods of electrical conductivity, pH measurements, and atomic emission analysis of the solutions. The research showed that the maximum activation of polymers was revealed within the molar ratio of KU-2-8:AV-17-8 equal to 3:3. In more detail, in comparison to AV-17-8, this interpolymer system showed an increase in the sorption degree by more than 1.5 times after 6 h of interaction. Moreover, compared with KU-2-8, the same interpolymer system showed an increase in the degree of cerium ions sorption by seven times after 24 h of interaction. As a result, the total cerium ions sorption degree after 48 h of sorption by individual KU-2-8 and AV-17-8 was 38% and 44%, respectively, whereas the cerium ions sorption degree by the same interpolymer system in the molar ratio 3:3 became 51%. An increase in the sorption degree of cerium ions by the interpolymer system in comparison with individual ion exchangers can be explained by the achievement of a high ionization degree of ion exchangers being activated in the interpolymer system by the remote interaction effect.
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Dissertations / Theses on the topic "KU-2×8"

1

Польшина, Т. Д., and T. D. Polshina. "Извлечение фтора из растворов металлургического производства : магистерская диссертация." Master's thesis, б. и, 2020. http://hdl.handle.net/10995/94604.

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Объектом исследования являются ионообменные смолы Lewatit TP 260 и КУ-2×8 в форме Al3+. Цель работы – насыщение катионитов ионами металла (Al3+) и изучение их сорбционной способности по отношению к ионам фтора. В работе проведены теоретические и лабораторные исследования по сорбции фтора на Lewatit TP 260 и КУ-2×8 в Al-форме. Рассмотрен механизм сорбции фтора на катионитах с разными функциональными группами.
The object of the study is Lewatit TP 260 and KU-2×8 ion-exchange resins in the form of Al3+. The purpose of this work is the saturation of cation exchangers with metal ions (Al3+) and the study of their sorption ability with respect to fluorine ions. In this paper, theoretical and laboratory studies on fluorine sorption on Lewatit TP 260 and KU-2×8 in Al-form were carried out. The mechanism of fluorine sorption on cationites with different functional groups is considered.
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Book chapters on the topic "KU-2×8"

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Carbery, D. "Variation 8: Reactions of Ketones and 2-Halo Alcohols." In Science of Synthesis Knowledge Updates KU 2011/1, 1. Georg Thieme Verlag KG, 2010. http://dx.doi.org/10.1055/sos-sd-129-00049.

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Conference papers on the topic "KU-2×8"

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Kozlova, Marina M., Vyacheslav F. Markov, Artem E. Bobylev, and Larisa N. Maskaeva. "Kinetics of the KU-2×8 cation exchanger's oxidative destruction with Fenton reaction." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING: ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0018352.

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Journal articles
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