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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="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-817</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="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Выделение соединений хрома из ZSM-5 в ионную жидкость</article-title><trans-title-group xml:lang="en"><trans-title>Speciation of Chromium Compounds from ZSM-5 into an Ionic Liquid</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Huang</surname><given-names>H. L.</given-names></name><name name-style="western" xml:lang="en"><surname>Huang</surname><given-names>H. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мяоли, 36063</p></bio><bio xml:lang="en"><p>Department of Safety, Health and Environmental Engineering.</p><p>Miao-Li 36063, Taiwan</p></bio><email xlink:type="simple">hlhuang@nuu.edu.tw</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Wei</surname><given-names>Y. J.</given-names></name><name name-style="western" xml:lang="en"><surname>Wei</surname><given-names>Y. J.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мяоли, 36063</p></bio><bio xml:lang="en"><p>Department of Safety, Health and Environmental Engineering.</p><p>Miao-Li 36063, Taiwan</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный объединенный университет</institution></aff><aff xml:lang="en"><institution>National United University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>05</month><year>2021</year></pub-date><volume>88</volume><issue>2</issue><fpage>270</fpage><lpage>274</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Huang H.L., Wei Y.J., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Huang H.L., Wei Y.J.</copyright-holder><copyright-holder xml:lang="en">Huang H.L., Wei Y.J.</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://zhps.ejournal.by/jour/article/view/817">https://zhps.ejournal.by/jour/article/view/817</self-uri><abstract><p>С помощью рентгеновской абсорбционной спектроскопии XANES изучен вид хрома, извлеченного из ZSM-5 в ионную жидкость (ИЖ). Основные виды адсорбированного хрома в ZSM-5: Cr(VI)-HA(Cr(VI), хелатированный гуминовыми кислотами (HAs) 57%, Cr(VI)ads (Cr(VI), адсорбированный из ZSM-5) 33% и Cr(III)-HA (Cr(III), хелатированный HA) 10%. Хлорид 1-бутил-3-метилимидазолия ([C4mim]Cl) использован в качестве ИЖ для извлечения соединений хрома из ZSM-5. Экспериментальным путем извлечены ~75% соединений хрома в течение 30 мин при 343 К. Комбинированием эффективности извлечения хрома и результатов подгонки компонентов спектров XANES Cr(VI)-HA получен в [C4mim]Cl. После экстракции 34.5% соединений Cr(VI) восстанавливаются с образованием ионов Cr(III)-HA и Cr(III). Согласно данным EXAFS, длина связи Cr-O в соединениях Cr 1.69 A в [C4mim]Cl. Результаты 1H ЯМР-спектроскопии показывают, что на восстановление и экстракцию соединений Cr(VI) влияет [C4mim]+. Cr(VI)ads(9%&gt;), Cr(III)-HA (10.8%) и Cr(III)ads (5.2%) являлются неэкстрагируемыми частицами хрома в ZSM-5. При использовании [C4mim]Cl в качестве экстрагента доля Cr(VI) значительно снижается.</p></abstract><trans-abstract xml:lang="en"><p>The speciation of extracted chromium from ZSM-5 into an ionic liquid (IL) was studied using X-ray absorption near-edge structure (XANES) spectroscopy. The main adsorbed chromium species in ZSM-5 were Cr(VI)-HA (Cr(VI) chelated with humic acids (HAs)) (57%), Cr(VI)ads (Cr(VI) adsorbed on ZSM-5) (33%), and Cr(III)-HA (Cr(III) chelated with HA) (10%). In this work, l-butyl-3-methylimidazolium chloride ([C4mim]Cl), was used as the IL to extract the chromium compounds from ZSM-5. Experimentally, approximately 75% of the chromium compounds were extracted within 30 min at 343 K. Combining the chromium extraction efficiency and component fitting results of the XANES spectra, almost all of Cr(VI)-HA was extracted into [C4mim]Cl. Following extraction, 34.5% of the Cr(VI) compounds were reduced to form Cr(III)-HA and Cr(III) ions. The Cr-O bond distance of Cr compounds was 1.69 A in [C4mim]Cl as shown by X-ray absorption fine structure (EXAFS) spectroscopy. 1H nuclear magnetic resonance (NMR) showed that the reduction and extraction of Cr(VI) compounds were affected by [C4mim]+. The non-extractable chromium species in ZSM-5 were Cr(VI)ads (9%), Cr(III)-HA (10.8%), and Cr(III)ads (5.2%). The fraction of Cr(VI) was decreased greatly because of the use of [C4mim]Cl as the extractant.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>хром</kwd><kwd>ZSM-5</kwd><kwd>ионная жидкость</kwd><kwd>EXAFS</kwd><kwd>XANES</kwd></kwd-group><kwd-group xml:lang="en"><kwd>chromium</kwd><kwd>ZSM-5</kwd><kwd>ionic liquid</kwd><kwd>X-ray absorption fine structure</kwd><kwd>X-ray absorption near-edge structure</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">U. Farooq, J. A. Kozinski, M. A. Khan, M. Athar, Bioresour. 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