{"created":"2024-10-28T06:23:14.260390+00:00","id":2005345,"links":{},"metadata":{"_buckets":{"deposit":"3044a3e2-f011-4594-aabf-2555eaacf09d"},"_deposit":{"created_by":7,"id":"2005345","owners":[7],"pid":{"revision_id":0,"type":"depid","value":"2005345"},"status":"published"},"_oai":{"id":"oai:tokushima-u.repo.nii.ac.jp:02005345","sets":["1713853213384:1713853295607"]},"author_link":["67","69"],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-05-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicPageEnd":"406","bibliographicPageStart":"400","bibliographicVolumeNumber":"51","bibliographic_titles":[{"bibliographic_title":"Journal of Chemical Engineering of Japan","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Various solid oxide catalysts are active for the oxidative dehydrogenation of propane, but achieve yields of less than 2% when these were used for the oxidative dehydrogenation of isobutane to isobutene. An improved isobutene yield of 8% was obtained in the oxidative dehydrogenation of isobutane by using a folded-sheet mesoporous material (FSM-16) and mesoporous molecular sieve (MCM-41), with or without chromium via impregnation or template-ion exchange methods. Further activity enhancement, however, could not be attained. In the present study, chromium cations were introduced into the framework of SBA-15 using a direct synthesis method by mixing chromium nitrate with tetraethylorthosilicate in an aqueous solution with an initial pH of 1.5 and subsequent hydrothermal treatment. Loading the resultant catalyst, SBA-15, with a small amount of chromium (1.84 wt% Cr-SBA-15) increased the isobutene yield (15.4%) at 723 K, while a previous report showed that chromium oxide supported on SBA-15 (CrOx/SBA-15) prepared via incipient wetness impregnation had a lower isobutene yield (11%) at 813 K. To explain this improvement, the catalysts were characterized using X-ray diffraction, transmission electron microscopy, N2 adsorption-desorption, and NH3 temperature-programmed desorption. Cr-SBA-15 was found to have a large specific surface area (1,610 m2/g), although the structural and acidic nature of the catalyst was similar to the general properties of other mesoporous silicas. The conversion of Cr3+ species into Cr6+ on Cr-SBA-15 with the large specific surface area could affect the improvement of the oxidative dehydrogenation of isobutane to isobutene.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Society of Chemical Engineers, Japan","subitem_publisher_language":"en"}]},"item_10001_rights_15":{"attribute_name":"権利情報","attribute_value_mlt":[{"subitem_rights":"© 2018 The Society of Chemical Engineers, Japan","subitem_rights_language":"en"}]},"item_10001_source_id_9":{"attribute_name":"収録物ID","attribute_value_mlt":[{"subitem_source_identifier":"00219592","subitem_source_identifier_type":"ISSN"},{"subitem_source_identifier":"AA00709658","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_20":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_1715043197608":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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ショウ","creatorNameLang":"ja"},{"creatorName":"シマヅ, ショウ","creatorNameLang":"ja-Kana"},{"creatorName":"Shimazu, Sho","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"加藤, 雅裕","creatorNameLang":"ja"},{"creatorName":"カトウ, マサヒロ","creatorNameLang":"ja-Kana"},{"creatorName":"Katoh, 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Wataru","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"杉山, 茂","creatorNameLang":"ja"},{"creatorName":"スギヤマ, シゲル","creatorNameLang":"ja-Kana"},{"creatorName":"Sugiyama, Shigeru","creatorNameLang":"en"}],"familyNames":[{"familyName":"杉山","familyNameLang":"ja"},{"familyName":"スギヤマ","familyNameLang":"ja-Kana"},{"familyName":"Sugiyama","familyNameLang":"en"}],"givenNames":[{"givenName":"茂","givenNameLang":"ja"},{"givenName":"シゲル","givenNameLang":"ja-Kana"},{"givenName":"Shigeru","givenNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"67","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"10692/profile-ja.html","nameIdentifierScheme":"徳島大学 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Dehydrogenation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Isobutane","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"SBA-15","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Chromium","subitem_subject_language":"en","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":"Introduction of a Small Amount of Chromium to Enhance the Catalytic Performance of SBA-15 for the Oxidative Dehydrogenation of Isobutane to Isobutene","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Introduction of a Small Amount of Chromium to Enhance the Catalytic Performance of SBA-15 for the Oxidative Dehydrogenation of Isobutane to Isobutene","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"7","path":["1713853295607"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2018-09-14"},"publish_date":"2018-09-14","publish_status":"0","recid":"2005345","relation_version_is_last":true,"title":["Introduction of a Small Amount of Chromium to Enhance the Catalytic Performance of SBA-15 for the Oxidative Dehydrogenation of Isobutane to Isobutene"],"weko_creator_id":"7","weko_shared_id":-1},"updated":"2025-01-24T02:45:45.750620+00:00"}