{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T19:47:03Z","timestamp":1792784823990,"version":"4.5.0"},"reference-count":32,"publisher":"American Chemical Society (ACS)","issue":"40","license":[{"start":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:00:00Z","timestamp":1790726400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"name":"SAGA Light Source","award":["83-2509084P"],"award-info":[{"award-number":["83-2509084P"]}],"id":[{"id":"https:\/\/ror.org\/04dab1g54","id-type":"ROR","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Mixed semiclathrate hydrates (SCHs) incorporating various guest molecules exhibit high latent heat and allow precise control of the melting temperatures, making them promising materials for cold energy storage applications. The compositional uniformity and thermal properties of tetra-n-butylammonium bromide (TBAB) + tetra-n-butylammonium chloride (TBAC) mixed SCHs were evaluated via dual-energy X-ray computer tomography (DECT), microdifferential scanning calorimetry (\u03bcDSC), digital microscopy, and ion chromatography. DECT indicated that the tetragonal mixed SCHs are homogeneous solids, whereas the orthorhombic mixed SCHs with high or low-Br content are heterogeneous. The DSC curve of the tetragonal mixed SCHs exhibited a single endothermic peak, whereas those of the orthorhombic mixed SCHs showed split peaks. The orthorhombic mixed SCH dissociated in two stages, consistent with the split DSC peaks. The Br\u2013 content of the orthorhombic mixed SCH was higher than that of tetragonal SCH. The orthorhombic mixed SCHs exhibit high latent heats (227\u2013231 J g\u20131) as phase change materials, with melting temperatures around 283\u2013285 K. These values are higher than other SCHs formed from a single guest molecule with melting temperatures below 289 K, making them suitable for cold energy storage in air-conditioning systems.<\/jats:p>","DOI":"10.1021\/acsomega.6c08050","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T01:01:29Z","timestamp":1790816489000},"page":"61958-61965","source":"Crossref","is-referenced-by-count":0,"title":["Compositional Uniformity\nand Thermal Properties of\nTetra-\n                    <i>N<\/i>\n                    -butyl Ammonium Bromide and\nTetra-\n                    <i>N<\/i>\n                    -butyl Ammonium Chloride Mixed\nSemiclathrate Hydrates"],"prefix":"10.1021","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5305-4828","authenticated-orcid":true,"given":"Motoi","family":"Oshima","sequence":"first","affiliation":[{"name":"National Institute of Advanced Industrial Science and Technology , , , ,","place":["Sapporo, Hokkaido, Japan, 062-8517"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7240-2899","authenticated-orcid":true,"given":"Satoshi","family":"Takeya","sequence":"additional","affiliation":[{"name":"National Institute of Advanced Industrial Science and Technology , , , ,","place":["Tsukuba, Ibaraki, Japan, 305-8569"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akio","family":"Yoneyama","sequence":"additional","affiliation":[{"name":"SAGA Light Source , 8-7 Yayoigaoka , , ,","place":["Tosu, Saga, Japan, 841-0005"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6256-7278","authenticated-orcid":true,"given":"Yusuke","family":"Jin","sequence":"additional","affiliation":[{"name":"National Institute of Advanced Industrial Science and Technology , , , ,","place":["Sapporo, Hokkaido, Japan, 062-8517"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kiyofumi","family":"Suzuki","sequence":"additional","affiliation":[{"name":"National Institute of Advanced Industrial Science and Technology , , , ,","place":["Tsukuba, Ibaraki, Japan, 305-8569"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiro","family":"Nagao","sequence":"additional","affiliation":[{"name":"National Institute of Advanced Industrial Science and Technology , , , ,","place":["Sapporo, Hokkaido, Japan, 062-8517"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,30]]},"reference":[{"key":"2026101315065472500_cit1","doi-asserted-by":"publisher","first-page":"101380","DOI":"10.1016\/j.pmatsci.2024.101380","article-title":"Next generation\nphase change materials: State-of-the-art\ntowards sustainable future","volume":"148","author":"Kalidasan","year":"2025","journal-title":"Prog. 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Mater."},{"key":"2026101315065472500_cit4","volume-title":"Clathrate Hydrates\nof Natural Gases","author":"Sloan","year":"2008"},{"key":"2026101315065472500_cit5","doi-asserted-by":"publisher","first-page":"116514","DOI":"10.1016\/j.ces.2021.116514","article-title":"Phase equilibrium temperature\nand\ndissociation enthalpy in the tri-n-butylalkylphosphonium\nbromide semiclathrate hydrate systems","volume":"236","author":"Shimada","year":"2021","journal-title":"Chem.\nEng. Sci."},{"issue":"4","key":"2026101315065472500_cit6","doi-asserted-by":"publisher","first-page":"3315","DOI":"10.1039\/D3CP04252A","article-title":"Guest size effects\non a robust structure of semiclathrate\nhydrates and their thermophysical properties","volume":"26","author":"Muromachi","year":"2024","journal-title":"Phys. Chem. Chem. 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Calorim"},{"issue":"2","key":"2026101315065472500_cit29","doi-asserted-by":"publisher","first-page":"389","DOI":"10.1246\/bcsj.55.389","article-title":"Hydrates of\norganic compounds. VI. Heats of fusion and of solution of quaternary\nammonium halide clathrate hydrates","volume":"55","author":"Nakayama","year":"1982","journal-title":"Bull. Chem.\nSoc. Jpn."},{"issue":"6","key":"2026101315065472500_cit30","doi-asserted-by":"publisher","first-page":"990","DOI":"10.1023\/A:1023698728342","article-title":"Clathrate\nhydrates of tetrabutylammonium and tetraisoamylammonium halides","volume":"43","author":"Aladko","year":"2002","journal-title":"J. Struct. Chem."},{"issue":"1\u20132","key":"2026101315065472500_cit31","doi-asserted-by":"publisher","first-page":"107","DOI":"10.1007\/s10847-007-9401-5","article-title":"The heats of fusion of tetrabutylammonium fluoride\nionic clathrate hydrates","volume":"61","author":"Rodionova","year":"2008","journal-title":"J. Inclusion Phenom.\nMacrocyclic Chem."},{"key":"2026101315065472500_cit32","doi-asserted-by":"publisher","first-page":"1160","DOI":"10.1016\/j.cej.2017.08.054","article-title":"CH4 enclathration in tetraisoamylammonium\nbromide semiclathrate and its significance for natural gas storage","volume":"330","author":"Kim","year":"2017","journal-title":"Chem. Eng. J."}],"container-title":["ACS Omega"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsomega.6c08050","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/40\/61958\/68720427\/acsomega.6c08050.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/40\/61958\/68720427\/acsomega.6c08050.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T19:12:31Z","timestamp":1791918751000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/acsodf\/article\/11\/40\/61958\/5443030\/Compositional-Uniformity-and-Thermal-Properties-of"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,30]]},"references-count":32,"journal-issue":{"issue":"40","published-online":{"date-parts":[[2026,9,30]]},"published-print":{"date-parts":[[2026,10,13]]}},"URL":"https:\/\/doi.org\/10.1021\/acsomega.6c08050","relation":{},"ISSN":["2470-1343"],"issn-type":[{"value":"2470-1343","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,30]]}}}