{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:58:18Z","timestamp":1787029098366,"version":"build-2736575974"},"reference-count":49,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,11]],"date-time":"2024-05-11T00:00:00Z","timestamp":1715385600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"European Union-NextGenerationEU","award":["BG-RRP-2.004-0002"],"award-info":[{"award-number":["BG-RRP-2.004-0002"]}]},{"name":"European Union-NextGenerationEU","award":["K\u041f-06-H69\/5(2022)"],"award-info":[{"award-number":["K\u041f-06-H69\/5(2022)"]}]},{"name":"Bulgarian Science Fund","award":["BG-RRP-2.004-0002"],"award-info":[{"award-number":["BG-RRP-2.004-0002"]}]},{"name":"Bulgarian Science Fund","award":["K\u041f-06-H69\/5(2022)"],"award-info":[{"award-number":["K\u041f-06-H69\/5(2022)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A study of the liquid\u2013liquid extraction of ReO4\u2212 anions from hydrochloric acid solutions using the ionic liquid Aliquat 336 (QCl: trialkyl(C8\u2013C10)methylammonium chloride) via the well-known method of slope analysis along with the determination of the process parameters is presented. This study employs CCl4, CHCl3 and C6H12 as diluents. This study was carried out at room temperature (22 \u00b1 2) \u00b0C and an aqueous\/organic volumetric ratio of unity. The ligand effect on the complexation properties of ReO4\u2212 is quantitatively assessed in different organic media. The organic extract in chloroform media is examined through 1H, 13C and 15N NMR analysis as well as the HRMS technique and UV-Vis spectroscopy in order to view the anion exchange and ligand coordination in the organic phase solution. Final conclusions are given highlighting the role of the molecular diluent in complexation processes and selectivity involving ionic liquid ligands and various metal s-, p-, d- and f-cations. ReO4\u2212 ions have shown one of the best solvent extraction behaviors compared to other ions. For instance, the Aliquat 336 derivative bearing Cl\u2212 functions shows strongly enhanced extraction as well as pronounced separation abilities towards ReO4\u2212.<\/jats:p>","DOI":"10.3390\/molecules29102257","type":"journal-article","created":{"date-parts":[[2024,5,13]],"date-time":"2024-05-13T09:28:25Z","timestamp":1715592505000},"page":"2257","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Aliquat 336 in Solvent Extraction Chemistry of Metallic ReO4\u2212 Anions"],"prefix":"10.3390","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2481-0932","authenticated-orcid":false,"given":"Maria","family":"Atanassova","sequence":"first","affiliation":[{"name":"Department of General and Inorganic Chemistry, University of Chemical Technology and Metallurgy, 8 Kliment Okhridski Blvd., 1756 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhanina","family":"Petkova","sequence":"additional","affiliation":[{"name":"Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 9, 1113 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8703-0066","authenticated-orcid":false,"given":"Vanya","family":"Kurteva","sequence":"additional","affiliation":[{"name":"Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 9, 1113 Sofia, Bulgaria"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"106719","DOI":"10.1016\/j.mineng.2020.106719","article-title":"Review of rhenium extraction and recycling technologies from primary and secondary resources","volume":"161","author":"Shen","year":"2021","journal-title":"Miner. 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