{"id":81803,"date":"2025-07-18T13:58:44","date_gmt":"2025-07-18T04:58:44","guid":{"rendered":"https:\/\/www.waseda.jp\/inst\/research\/?p=81803"},"modified":"2025-08-18T13:58:58","modified_gmt":"2025-08-18T04:58:58","slug":"electrically-assisted-low-temperature-dry-reforming-of-methane-suppressing-carbon-deposition-under-high-pressure-conditions%ef%bc%88published-in-acs-catalysis-july-2025%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.waseda.jp\/inst\/research\/news\/81803","title":{"rendered":"Electrically Assisted Low-Temperature Dry Reforming of Methane Suppressing Carbon Deposition under High-Pressure Conditions\uff08Published in ACS Catalysis, July, 2025\uff09"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n
Journal Title
\n\/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d<\/td>\n		ACS Catalysis<\/td>\n<\/tr>\n
Publication Year and Month
\n\/\u63b2\u8f09\u5e74\u6708<\/td>\n		July, 2025<\/td>\n<\/tr>\n
Paper Title
\n\/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb<\/td>\n		Electrically Assisted Low-Temperature Dry Reforming of Methane Suppressing Carbon Deposition under High-Pressure Conditions<\/td>\n<\/tr>\n
DOI
\n\/\u8ad6\u6587DOI<\/td>\n		10.1021\/acscatal.5c03126<\/a><\/td>\n<\/tr>\n
\u00a0Author of Waseda University
\n\/\u672c\u5b66\u306e\u8457\u8005<\/td>\n		SEKINE, Yasushi(Professor, Faculty of Science and Engineering, School of Advanced Science and Engineering):Correspoinding Author, Last Author<\/span><\/td>\n<\/tr>\n
Related Websites
\n\/\u95a2\u9023Web<\/td>\n		–<\/td>\n<\/tr>\n
Abstract
\n\/\u6284\u9332<\/td>\n		\n
\n

Our approach to high-pressure dry reforming of methane (DRM) achieves synergistic performance enhancement via application of an electric field (EF) over a 1 wt % Ru\/La2<\/sub>Ce2<\/sub>O7<\/sub>\u00a0(LCO) catalyst. Conventional DRM is adversely affected by compromised activity and catalyst stability under pressurization caused by unfavorable thermodynamics. In sharp contrast, EF-assisted DRM has achieved exceptional CH4<\/sub>\/CO2<\/sub>\u00a0conversion. In fact, high H2<\/sub>\/CO ratios show coke resistance at temperatures as low as 473 K, which exceeds the equilibrium conversion constraints observed for conventional DRM. Pressurization was found to further enhance EF-assisted DRM activity by increasing the surface coverage of adsorbates that facilitates surface protonics, which is a proton hopping mechanism that promotes CH4<\/sub>\u00a0dissociative adsorption at low temperatures. Raman measurements and TEM-EDX mapping results show remarkable suppression of carbon deposition and metal sintering as the cause of long-term durability of EF-assisted DRM. When elucidating the reaction mechanism, temperature dependence, and turnover frequency (TOF) investigations have indicated unconventional anti-Arrhenius behavior, particularly identifying the metal\u2013support interface as the primary active site. Partial pressure-based kinetic studies and transient gas-switch test results suggest that CHx<\/i><\/sub>O species serve as key reaction intermediates capable of direct decomposition into H2<\/sub>\u00a0and CO. NNP-based structural optimization calculations identified CHO* as the most stable intermediate species formed through lattice oxygen interactions with CH4<\/sub> dissociation. From C\u2013H*, although oxidation into CHO* is kinetically favorable, dehydrogenation into C* is thermodynamically favorable. For rationalizing the distinct coke suppression shown by EF-assisted DRM, investigations of C\u2013C* aggregation have revealed that C\u2013H* formation grew increasingly more favorable over C\u2013C* in the presence of high surface H concentrations. Granted that high H surface coverage was found in pressurized EF-assisted DRM, this growth indicates a potential H feedback mechanism that facilitates hydrogenation to C\u2013H*, thereby suppressing coke formation.<\/p>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Journal Title \/\u63b2\u8f09\u30b8\u30e3\u30fc\u30ca\u30eb\u540d ACS Catalysis Publication Year and Month \/\u63b2\u8f09\u5e74\u6708 July, 2025 Paper Title \/\u8ad6\u6587\u30bf\u30a4\u30c8\u30eb Electric […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[218,217],"class_list":["post-81803","post","type-post","status-publish","format-standard","hentry","tag-impact-en","tag-impact"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/81803","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/comments?post=81803"}],"version-history":[{"count":1,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/81803\/revisions"}],"predecessor-version":[{"id":81804,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/posts\/81803\/revisions\/81804"}],"wp:attachment":[{"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/media?parent=81803"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/categories?post=81803"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waseda.jp\/inst\/research\/wp-json\/wp\/v2\/tags?post=81803"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}