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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2024-19-1-7-16</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-2028</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THEORETICAL BASIS OF CHEMICAL TECHNOLOGY</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ТЕОРЕТИЧЕСКИЕ ОСНОВЫ ХИМИЧЕСКОЙ ТЕХНОЛОГИИ</subject></subj-group></article-categories><title-group><article-title>Sorption of picolinic acid by Cu(II)-containing sulfocationite KU-2-8</article-title><trans-title-group xml:lang="ru"><trans-title>Сорбция пиколиновой кислоты Cu(II)-содержащим сульфокатионитом КУ-2-8</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1733-7649</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Альтшулер</surname><given-names>Г. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Altshuler</surname><given-names>H. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Альтшулер Генрих Наумович - д.х.н., профессор, главный научный сотрудник, Scopus Author ID 7003773015, 7006601157, ResearcherID B-5132-2014.</p><p>650000, Кемерово, пр-т Советский, д. 18</p></bio><bio xml:lang="en"><p>Heinrich N. Altshuler - Dr. Sci. (Chem.), Professor, Chief Researcher, Scopus Author ID 7003773015, 7006601157, ResearcherID B-5132-2014.</p><p>18, Sovetskii pr., Kemerovo, 650000</p></bio><email xlink:type="simple">altshulerh@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8479-1529</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Некрасов</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Nekrasov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Некрасов Владимир Николаевич - аспирант, Scopus Author ID 57240889000.</p><p>650000, Кемерово, пр-т Советский, д. 18</p></bio><bio xml:lang="en"><p>Vladimir N. Nekrasov - Postgraduate Student, Scopus Author ID 57240889000.</p><p>18, Sovetskii pr., Kemerovo, 650000</p></bio><email xlink:type="simple">graybadwolf@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4570-7160</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лырщиков</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Lyrshchikov</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лырщиков Сергей Юрьевич - к.х.н., научный сотрудник. Scopus Author ID 54879375200, ResearcherID B-2673-2014.</p><p>650000, Кемерово, пр-т Советский, д. 18</p></bio><bio xml:lang="en"><p>Sergey Yu. Lyrshchikov - Cand. Sci. (Chem.), Researcher, Scopus Author ID 54879375200, ResearcherID B-2673-2014.</p><p>18, Sovetskii pr., Kemerovo, 650000</p></bio><email xlink:type="simple">serstud@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7035-673X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Альтшулер</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Altshuler</surname><given-names>O. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Альтшулер Ольга Генриховна - д.х.н., научный сотрудник, . Scopus Author ID 6507108263, ResearcherID B-5223-2014.</p><p>650000, Кемерово, пр-т Советский, д. 18</p></bio><bio xml:lang="en"><p>Olga H. Altshuler - Dr. Sci. (Chem.), Researcher, Scopus Author ID 6507108263, ResearcherID B-5223-2014.</p><p>18, Sovetskii pr., Kemerovo, 650000</p></bio><email xlink:type="simple">alt_og@bk.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральный исследовательский центр угля и углехимии Сибирского отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Федеральный исследовательский центр угля и углехимии Сибирского отделения РАН; Кемеровский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Federal Research Center of Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences; Kemerovo State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>02</day><month>03</month><year>2024</year></pub-date><volume>19</volume><issue>1</issue><fpage>7</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Altshuler H.N., Nekrasov V.N., Lyrshchikov S.Y., Altshuler O.H., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Альтшулер Г.Н., Некрасов В.Н., Лырщиков С.Ю., Альтшулер О.Г.</copyright-holder><copyright-holder xml:lang="en">Altshuler H.N., Nekrasov V.N., Lyrshchikov S.Y., Altshuler O.H.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.finechem-mirea.ru/jour/article/view/2028">https://www.finechem-mirea.ru/jour/article/view/2028</self-uri><abstract><sec><title>Objectives</title><p>Objectives. To study the equilibrium distribution of components between KU-2-8 sulfocationite and an aqueous solution containing picolinic acid and Cu(II); to show the possibility of immobilization of cations of picolinic acid and Cu2+ in sulfonic cation exchanger KU-2-8; to calculate the component compositions of the equilibrium solution, in order to obtain the required ionic composition of the KU-2-8 sulfonic cation exchanger according to the selectivity coefficients of binary ion exchange, and the constants of formation of such complexes in water.</p></sec><sec><title>Methods</title><p>Methods. The concentrations of the individual components in multicomponent solutions were calculated using the HySS 2009 program (Hyperquad Simulaton and Speciation). The calculation of the equilibrium ionic compositions of KU-2-8 sulfocationite was performed using the selectivity coefficients of binary ion exchanges and the formation constants of complexes of picolinic acid with Cu2+ and H+ cations. Experimental study of the equilibrium distribution of components between aqueous solutions of picolinic acid, copper nitrate, and KU-2-8 sulfocationite was carried out by means of the dynamic method at a temperature of 298 K. Fourier-transform infrared spectroscopy and electron paramagnetic resonance spectroscopy were used, in order to determine the ionic forms of the components contained in the sulfocationite.</p></sec><sec><title>Results</title><p>Results. It was shown that the equilibrium solution contains H+ protons, Cu2+ cations, LH picolinic acid molecules, protonated picolinic acid cations [H2L]+, deprotonated picolinic acid anions L-, Cu2+ complexes with the deprotonated picolinic acid anion [CuL]+, and Cu2+ complexes with two anions of deprotonated picolinic acid [CuL2]. The concentration of H+, Cu2+, and [H2L]+ cations in the solution significantly exceeds the concentration of other components at pH values from 0 to 0.5. The content of [CuL]+ cations and neutral complexes [CuL2] increases significantly in the solution, while the [H2L]+ cations disappear at pH greater than 1. It was experimentally established that the concentrations of picolinic acid and copper in the polymer phase are many times higher than the concentrations of these components in an aqueous solution. The partition coefficients are about 24 and 210 for picolinic acid and Cu(II), respectively. The calculated dependencies of the concentrations of Cu2+, [H2L]+, H+, [CuL]+ cations in the polymer vs pH of an equilibrium solution containing picolinic acid were obtained. The experimental data on the concentrations of all cations in the ion exchanger is in the intervals of the calculated compositions within the limits of measurement errors.</p></sec><sec><title>Conclusions</title><p>Conclusions. KU-2-8 sulfocationite is proposed as a container for obtaining drugs based on picolinic acid and Cu2+ cations. It was shown that the selectivity coefficients of binary ion exchanges and the formation constants of [H2L]+, [CuL]+ complexes can be used to precalculate the ionic compositions of the equilibrium solution, in order to obtain the required compositions of the sulfocationite.</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. Изучить равновесное распределение компонентов между сульфокатионитом КУ-2-8 и водным раствором, содержащим пиколиновую кислоту и Cu(II); показать возможность иммобилизации катионов пиколиновой кислоты и Cu2+ в сульфокатионите КУ-2-8. Выполнить предрасчет компонентного состава равновесного раствора для получения необходимого ионного состава сульфокатионита КУ-2-8 по коэффициентам селективности бинарных ионных обменов и константам образования комплексов в воде.</p></sec><sec><title>Методы</title><p>Методы. Концентрации индивидуальных компонентов в многокомпонентных растворах рассчитывали с помощью программы HySS 2009 (Hyperquad Simulaton and Speciation). Расчет равновесных ионных составов сульфокатионита КУ-2-8 выполнен по коэффициентам селективности бинарных ионных обменов и константам образования комплексов пиколиновой кислоты с катионами Cu2+ и H+. Экспериментальное исследование равновесного распределения компонентов между водными растворами пиколиновой кислоты, нитрата меди и сульфокатионитом КУ-2-8 проведено динамическим методом при температуре 298 К. Для определения ионных форм компонентов, содержащихся в сульфокатионите, использованы инфракрасная спектроскопия с преобразованием Фурье и спектроскопия электронного парамагнитного резонанса.</p></sec><sec><title>Результаты</title><p>Результаты. Показано, что в равновесном растворе содержатся протоны H+, катионы Cu2+, молекулы пиколиновой кислоты LH, катионы протонированной пиколиновой кислоты [H2L]+, анионы депротонированной пиколиновой кислоты L-, комплексы Cu2+ с анионом депротонированной пиколиновой кислоты [CuL]+, комплексы Cu2+ с двумя анионами депротонированной пиколиновой кислоты [CuL2]. При значениях рН от 0 до 0.5 в растворе концентрация катионов H+, Cu2+, [H2L]+ существенно превышает концентрацию других компонентов, при рН больше 1 в растворе значительно увеличивается содержание катионов [CuL]+, нейтральных комплексов [CuL2] и практически исчезают катионы [H2L]+. Экспериментально установлено, что концентрация пиколиновой кислоты и меди в полимерной фазе во много раз превышает концентрацию этих компонентов в водном растворе. Коэффициенты распределения составляют примерно 24 и 210 для пиколиновой кислоты и Cu(II) соответственно. Получены расчетные зависимости концентрации катионов Cu2+, [H2L]+, H+, [CuL]+ в полимере от рН равновесного раствора, содержащего пиколиновую кислоту. Экспериментальные данные о концентрациях всех катионов в ионите в пределах ошибок измерений попадают в интервалы расчетных составов.</p></sec><sec><title>Выводы</title><p>Выводы. Сульфокатионит КУ-2-8 предложен в качестве контейнера для получения лекарственных препаратов на основе пиколиновой кислоты и катионов Cu2+. По коэффициентам селективности бинарных ионных обменов и константам образования комплексов [H2L]+, [CuL]+ выполнен предрасчет компонентного состава равновесного раствора для получения необходимого ионного состава сульфокатионита КУ-2-8.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>сульфокатионит КУ-2-8</kwd><kwd>пиколиновая кислота</kwd><kwd>катионы меди</kwd><kwd>сорбция</kwd></kwd-group><kwd-group xml:lang="en"><kwd>KU-2-8 sulfocationite</kwd><kwd>picolinic acid</kwd><kwd>copper(II) cations</kwd><kwd>sorption</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках государственного задания Института углехимии и химического материаловедения Федерального исследовательского центра угля и углехимии Сибирского отделения Российской академии наук (проект № 121031500194-5)</funding-statement><funding-statement xml:lang="en">This work was performed as part of the State Task for the Institute of Coal Chemistry and Chemical Materials Science, project no. 121031500194-5</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Narui K., Noguchi N., Saito A., Kakimi K., Motomura N., Kubo K., Takamoto S., Sasatsu M. 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