{"id":2175,"date":"2025-09-26T09:00:38","date_gmt":"2025-09-26T00:00:38","guid":{"rendered":"https:\/\/supraceramics.jp\/?p=2175"},"modified":"2025-09-26T09:00:38","modified_gmt":"2025-09-26T00:00:38","slug":"publication-inorg-chem-motohashi-nambu-kimoto-sugimoto-inada-et-al-a-sr-ga-oxy-hydroxide-with-high-thermal-stability-unraveling-its-characteristic-hydrogen-bond-network","status":"publish","type":"post","link":"https:\/\/supraceramics.jp\/en\/2025\/09\/2175\/","title":{"rendered":"Publication | Inorg. Chem. (Motohashi, Nambu, Kimoto, Sugimoto, Inada et al.) \u201cA Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network\u201d"},"content":{"rendered":"<p>A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network<\/p>\n<p>Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi<\/p>\n<p>Oxy-hydroxides represent potential proton carriers for solid acid catalysts and proton conductors owing to their hydroxide-rich compositions. However, their applications in high-temperature environments are limited due to thermal instability associated with dehydration at moderate to high temperatures. Therefore, the development of oxy-hydroxides with enhanced thermal stability is of critical importance. Herein, we report the discovery of a strontium\u2013gallium oxy-hydroxide, Sr2Ga3O6(OH), with exceptional thermal stability. The Sr\u2013Ga oxy-hydroxide was successfully synthesized via an unconventional synthesis route, \u201cvapor hydroxidation\u201d, involving high-temperature heat treatment in highly concentrated water vapor. Structural characterization employing X-ray diffraction, neutron diffraction, and transmission electron microscopy revealed that the Sr\u2013Ga oxy-hydroxide crystallizes in a trigonal structure (R3\u0305 space group) with lattice parameters a = 18.1904(2) \u00c5 and c = 7.2693(1) \u00c5. Notably, OH\u2013 anions are nonuniformly distributed within the crystal structure and are confined to a narrow space between two strontium sites. Thermogravimetry combined with desorption gas analysis indicated that OH\u2013 anions are retained in the crystal structure up to approximately 850 \u00b0C. In situ infrared spectroscopy upon heating demonstrated proton redistribution via multilinked hydrogen bonds at elevated temperatures, which likely contributes to the excellent thermal stability.<\/p>\n<p><a href=\" https:\/\/doi.org\/10.1021\/acs.inorgchem.5c02586\"><br \/>\n<em>Inorg. Chem. <\/em> 2025, 64, 36, 18294-18303. (DOI: 10.1039\/ acs.inorgchem.5c02586)<br \/>\n<\/a><\/p>\n<p><a href=\"https:\/\/www.kanagawa-u.ac.jp\/news\/details_29491.html\">\u30d7\u30ec\u30b9\u30ea\u30ea\u30fc\u30b9\uff08\u795e\u5948\u5ddd\u5927\u5b66\uff09<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi Oxy-hydroxides represent potential proton carriers for solid acid catalysts and proton conductors [&hellip;]<\/p>\n","protected":false},"author":222414606,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_themeisle_gutenberg_block_has_review":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_locale":"en_US","_original_post":"https:\/\/supraceramics.jp\/?p=2173","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[124830],"tags":[],"class_list":["post-2175","post","type-post","status-publish","format-standard","hentry","category-news","en-US"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pe2JgX-z5","jetpack-related-posts":[{"id":2173,"url":"https:\/\/supraceramics.jp\/2025\/09\/2173\/","url_meta":{"origin":2175,"position":0},"title":"Publication | Inorg. Chem. (Motohashi, Nambu, Kimoto, Sugimoto, Inada et al.) \u201cA Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network\u201d","author":"shorike","date":"2025\u5e749\u670826\u65e5","format":false,"excerpt":"\u5171\u540c\u7814\u7a76\u6210\u679c\uff1a\u71c3\u6599\u96fb\u6c60\u3084\u89e6\u5a92\u306a\u3069\u3078\u306e\u5fdc\u7528\u304c\u671f\u5f85\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u3092\u767a\u898b\uff08A01\u672c\u6a4b\u3001B01\u5357\u90e8\u3001B01\u6728\u672c\u3001B01\u6749\u672c\u3001B01\u7a32\u7530\uff09 A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi \u5353\u8d8a\u3057\u305f\u71b1\u5b89\u5b9a\u6027\u3092\u6709\u3059\u308b\u30b9\u30c8\u30ed\u30f3\u30c1\u30a6\u30e0\u30fb\u30ac\u30ea\u30a6\u30e0\u9178\u6c34\u9178\u5316\u7269Sr2Ga3O6(OH)\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u672c\u5316\u5408\u7269\u306f\u3001\u72ec\u81ea\u958b\u767a\u3057\u305f\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\uff08\u82f1\u8a9e\u3067\u306f\u9020\u8a9e \u201cvapor hydroxidation\u201d \u3068\u547d\u540d\uff09\u300d\u3092\u7528\u3044\u3066\u5408\u6210\u3055\u308c\u3001\u96fb\u5b50\u9855\u5fae\u93e1\u3001X \u7dda\u56de\u6298\u3001\u4e2d\u6027\u5b50\u56de\u6298\u3001\u8d64\u5916\u5206\u5149\u3092\u7528\u3044\u305f\u5148\u7aef\u5206\u6790\u306b\u3088\u308a\u3001\u8a73\u7d30\u306a\u7d50\u6676\u69cb\u9020\u304a\u3088\u3073\u9ad8\u71b1\u5b89\u5b9a\u6027\u306b\u5bc4\u4e0e\u3059\u308b\u6c34\u7d20\u7d50\u5408\u306e\u5b58\u5728\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u672c\u6210\u679c\u306b\u3088\u308a\u3001\uff08\u9178\uff09\u6c34\u9178\u5316\u7269\u306e\u958b\u767a\u7814\u7a76\u304c\u52a0\u901f\u3055\u308c\u3001\u71c3\u6599\u96fb\u6c60\u3084\u56fa\u4f53\u9178\u89e6\u5a92\u306a\u3069\u3078\u5fdc\u7528\u53ef\u80fd\u306a\u9769\u65b0\u7684\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u306e\u5275\u88fd\u306b\u7e4b\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 Inorg.\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2056,"url":"https:\/\/supraceramics.jp\/en\/2025\/06\/2056\/","url_meta":{"origin":2175,"position":1},"title":"Publication | J. Mater. Chem. A (Motohashi, Kageyama, Takeiri et al.) \u201cThermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor\u201d","author":"shorike","date":"2025\u5e746\u670810\u65e5","format":false,"excerpt":"Thermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor Kenji Arai, Yoko Kokubo, Yusuke Asai, Satoshi Ogawa, *Miwa Saito, Maria Kirsanova, Iaroslava Shakhova, Artem Abakumov, Fumitaka Takeiri, Hiroshi Kageyama, *Teruki Motohashi The diverse functionalities of (oxy-)hydroxides, such as electrocatalytic activity of transition-metal oxy-hydroxides in the oxygen evolution reaction (OER) and\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1850,"url":"https:\/\/supraceramics.jp\/en\/2024\/08\/1850\/","url_meta":{"origin":2175,"position":2},"title":"Publication | Inorg. Chem. (Katagiri, Sugimoto, Motohashi et al.) \u201cMechanistic Insights on the Formation of a Carbodiimide Ion from Urea in La2O2NCN Synthesis Based on the \u201cProanion\u201d Strategy\u201d","author":"shorike","date":"2024\u5e748\u67088\u65e5","format":false,"excerpt":"Mechanistic Insights on the Formation of a Carbodiimide Ion from Urea in La2O2NCN Synthesis Based on the \u201cProanion\u201d Strategy Oomi Sumioka, Naoki Tarutani, Kiyofumi Katagiri, Kei Inumaru, Zi Lang Goo, Kunihisa Sugimoto, Yusuke Asai, Miwa Saito, and Teruki Motohashi This study affords mechanistic insights into the formation mechanism of carbodiimide\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2054,"url":"https:\/\/supraceramics.jp\/2025\/06\/2054\/","url_meta":{"origin":2175,"position":3},"title":"Publication | J. Mater. Chem. A (Motohashi, Kageyama, Takeiri et al.) \u201cThermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor\u201d","author":"shorike","date":"2025\u5e746\u670810\u65e5","format":false,"excerpt":"\u5171\u540c\u7814\u7a76\u6210\u679c\uff1a\u30d7\u30ed\u30c8\u30f3\u4f1d\u5c0e\u4f53\u3001\u56fa\u4f53\u9178\u89e6\u5a92\u306a\u3069\u6c34\u9178\u5316\u7269\u7cfb\u6a5f\u80fd\u6027\u6750\u6599\u306e\u65b0\u898f\u5408\u6210\u6cd5\u3092\u958b\u767a\uff08A01\u672c\u6a4b\u3001A01\u9670\u5c71\uff08\u5354\u529b\u8005\uff09\u3001B01\u7af9\u5165\uff08\u5354\u529b\u8005\uff09\uff09 Thermally stable proton-conducting oxy-hydroxides synthesized in concentrated water vapor Kenji Arai, Yoko Kokubo, Yusuke Asai, Satoshi Ogawa, *Miwa Saito, Maria Kirsanova, Iaroslava Shakhova, Artem Abakumov, Fumitaka Takeiri, Hiroshi Kageyama, *Teruki Motohashi \u672c\u7814\u7a76\u3067\u306f\u3001\uff08\u9178\uff09\u6c34\u9178\u5316\u7269\u306e\u5408\u6210\u6cd5\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\uff08\u82f1\u8a9e\u3067\u306f\u9020\u8a9e \u201cvapor hydroxidation\u201d \u3068\u547d\u540d\uff09\u300d\u3092\u72ec\u81ea\u958b\u767a\u3057\u3001\u65b0\u898f\u9178\u6c34\u9178\u5316\u7269 [Ba2Ox(OH)y]0.55InO2\u3092\u767a\u898b\u3057\u307e\u3057\u305f\u3002\u672c\u5408\u6210\u6cd5\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u91d1\u5c5e\u9178\u5316\u7269\u306e\u524d\u99c6\u4f53\u3092\u5f93\u6765\u5408\u6210\u6cd5\u3068\u5927\u304d\u304f\u7570\u306a\u308b500\u2103\u4ee5\u4e0a\u3001\u6c34\u84b8\u6c1780\uff5e100\u4f53\u7a4d%\u3067\u76f4\u63a5\u6c34\u9178\u5316\u7269\u5316\u3059\u308b\u3068\u3053\u308d\u3067\u3059\u3002\u3053\u306e\u6c34\u84b8\u6c17\u6fc3\u5ea6\u306f\u5ba4\u6e29\u98fd\u548c\u6c34\u84b8\u6c17\u306e30\u500d\u4ee5\u4e0a\uff08\u3064\u307e\u308a\u3001\u6e7f\u5ea63000%\uff09\u3067\u3042\u308a\u3001\u9ad8\u6e29\u9ad8\u6fc3\u5ea6\u6c34\u84b8\u6c17\u96f0\u56f2\u6c17\u3067\u306e\u307f\u5b89\u5b9a\u306b\u5b58\u5728\u3059\u308b\u65b0\u7269\u8cea\u30fb\u65b0\u6750\u6599\u306e\u767a\u898b\u3092\u72d9\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u56de\u898b\u51fa\u3057\u305f\u65b0\u898f\u9178\u6c34\u9178\u5316\u7269\u306f\u30d0\u30ea\u30a6\u30e0\u6c34\u9178\u5316\u7269\u5c64\u3068\u30a4\u30f3\u30b8\u30a6\u30e0\u9178\u5316\u7269\u5c64\u304c\u7a4d\u5c64\u3057\u305f\u30e6\u30cb\u30fc\u30af\u306a\u7d50\u6676\u69cb\u9020\u3092\u3082\u3063\u3066\u304a\u308a\u3001\u30d7\u30ed\u30c8\u30f3\u4f1d\u5c0e\u4f53\u3068\u3057\u3066\u7279\u7570\u306a\u6319\u52d5\u3092\u793a\u3059\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u4eca\u5f8c\u3082\u300c\u6c17\u76f8\u6c34\u9178\u5316\u7269\u5316\u53cd\u5fdc\u300d\u3092\u6d3b\u7528\u3057\u3066\u672a\u8e0f\u63a2\u7d22\u7a7a\u9593\u306b\u304a\u3051\u308b\u9769\u65b0\u7684\u306a\u30d7\u30ed\u30c8\u30f3\u6a5f\u80fd\u6027\u6750\u6599\u306e\u5275\u88fd\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002 J. Mater. Chem. A (2025) in press. (DOI: 10.1039\/D5TA01492A) Selected as Outside Back\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1216,"url":"https:\/\/supraceramics.jp\/2022\/12\/1216\/","url_meta":{"origin":2175,"position":4},"title":"The 1st Symposium on Materials Chemistry for New Properties and Functions","author":"shorike","date":"2022\u5e7412\u670811\u65e5","format":false,"excerpt":"The 2nd Symposium on Materials Chemistry for New Properties and Functions Ookayama Main building 3F Room 345 (\u7b2c2 \u4f1a\u8b70\u5ba4), Tokyo Institute of Technology 5 December, 2022 Program: 9:30 Opening (Kazuhiko Maeda, Tokyo Tech) 9:35 Development of Sustainable and Safe Synthesis Method of Metal Oxynitrides Using Solid-Nitriding Agents (Kiyofumi Katagiri, Hiroshima\u2026","rel":"","context":"In &quot;Event&quot;","block_context":{"text":"Event","link":"https:\/\/supraceramics.jp\/en\/category\/event\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":534,"url":"https:\/\/supraceramics.jp\/2023\/01\/534\/","url_meta":{"origin":2175,"position":5},"title":"Publication | ACS Catal. (Maeda, et al.) &#8220;Selective CO\u2082-to-Formate Conversion Driven by Visible Light over a Precious-Metal-Free Nonporous Coordination Polymer&#8221;","author":"shorike","date":"2023\u5e741\u670810\u65e5","format":false,"excerpt":"Selective CO\u2082-to-Formate Conversion Driven by Visible Light over a Precious-Metal-Free Nonporous Coordination Polymer Yoshinobu Kamakura, Shuhei Yasuda, Naoki Hosokawa, Shunta Nishioka, Sawa Hongo, Toshiyuki Yokoi, Daisuke Tanaka*, Kazuhiko Maeda* Metal\u2013organic frameworks (MOFs) and coordination polymers (CPs) are potential candidates for high-performance photocatalysts because of their high tunability of electronic and\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/supraceramics.jp\/en\/category\/news\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/users\/222414606"}],"replies":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/comments?post=2175"}],"version-history":[{"count":1,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2175\/revisions"}],"predecessor-version":[{"id":2176,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/posts\/2175\/revisions\/2176"}],"wp:attachment":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/media?parent=2175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/categories?post=2175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/tags?post=2175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}