{"created":"2023-07-25T10:25:15.626037+00:00","id":5493,"links":{},"metadata":{"_buckets":{"deposit":"08d06961-13f8-4a22-899e-55508491fc63"},"_deposit":{"created_by":15,"id":"5493","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"5493"},"status":"published"},"_oai":{"id":"oai:air.repo.nii.ac.jp:00005493","sets":["590:629:630"]},"author_link":["15483","15484","15485","15486","15487"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"517","bibliographicVolumeNumber":"8","bibliographic_titles":[{"bibliographic_title":"Metals"}]}]},"item_10001_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Pt, Pd, and Rh platinum group metals (PGMs) are utilized in automotive catalytic converters to reduce the level of harmful gas emissions. To evaluate the separation efficiencies of PGMs from the leach liquors of automotive catalysts, their extractabilities from both single-component solutions and leach liquors were determined using three p-dialkylaminomethylcalix[4]arenes (alkyl: n-hexyl~n-octyl; 3–5) as extractants, and the obtained results were compared with the data of acyclic p-di-n-octylaminomethyldimethylphenol (6) and those previously reported for macrocyclic calix[4]arene- and thiacalix[n]arene-based amine and amide extractants. Various extraction parameters, including the contact time, HCl concentration, and concentrations of Pd(II) and Pt(IV) ions, were examined, and the distributions and stoichiometry ratios of the recovered Pd(II) and Pt(IV) species were calculated. All macrocyclic extractants 3–5 exhibited high and selective extractabilities of Pd(II) and Pt(IV) ions contained in the leach liquors of automotive catalysts. The E% values of 3–5 from the leach liquors were 94.2, 93.0, and 97.7 for Pd(II) and 91.7, 94.0, and 92.5 for Pt(IV), respectively. Acyclic compound 6 did not perform well even though higher ratios of extractant used. Furthermore, the results of reusability testing demonstrated relatively large extractability values obtained for these two metals even after five extraction/stripping cycles.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"MDPI"}]},"item_10001_relation_25":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.3390/met8070517","subitem_relation_type_select":"DOI"}}]},"item_10001_rights_15":{"attribute_name":"権利情報","attribute_value_mlt":[{"subitem_rights":"© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)."}]},"item_10001_version_type_20":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_1724099666130":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"2075-4701","subitem_source_identifier_type":"ISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yamada, Manabu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"15483","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kaneta, Yu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"15484","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Gandhi, Muniyappan Rajiv","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"15485","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Kunda, Uma Maheswara Rao","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"15486","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Shibayama, Atsushi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"15487","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-11-16"}],"displaytype":"detail","filename":"riA_2021_13.pdf","filesize":[{"value":"3.2 MB"}],"format":"application/pdf","licensefree":"CC BY 4.0","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"riA_2021_13","url":"https://air.repo.nii.ac.jp/record/5493/files/riA_2021_13.pdf"},"version_id":"37a77945-b332-4885-946d-5699b19a3812"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"calixarene-based extractants","subitem_subject_scheme":"Other"},{"subitem_subject":"platinum-group metals","subitem_subject_scheme":"Other"},{"subitem_subject":"palladium","subitem_subject_scheme":"Other"},{"subitem_subject":"platinum","subitem_subject_scheme":"Other"},{"subitem_subject":"solvent extraction","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Calix[4]arene-Based Amino Extractants Containing n-Alkyl Moieties for Separation of Pd(II) and Pt(IV) from Leach Liquors of Automotive Catalysts","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Calix[4]arene-Based Amino Extractants Containing n-Alkyl Moieties for Separation of Pd(II) and Pt(IV) from Leach Liquors of Automotive Catalysts","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"15","path":["630"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2021-11-16"},"publish_date":"2021-11-16","publish_status":"0","recid":"5493","relation_version_is_last":true,"title":["Calix[4]arene-Based Amino Extractants Containing n-Alkyl Moieties for Separation of Pd(II) and Pt(IV) from Leach Liquors of Automotive Catalysts"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2024-08-24T22:35:47.917797+00:00"}