{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T18:38:49Z","timestamp":1792089529829,"version":"4.4.0"},"reference-count":67,"publisher":"American Association for the Advancement of Science (AAAS)","issue":"13","content-domain":{"domain":["www.science.org"],"crossmark-restriction":true},"short-container-title":["Sci. Adv."],"published-print":{"date-parts":[[2024,3,29]]},"abstract":"<jats:p>\n            Hydrogen cyanide (HCN) is synthesized from ammonia (NH\n            <jats:sub>3<\/jats:sub>\n            ) and methane (CH\n            <jats:sub>4<\/jats:sub>\n            ) at\n            <jats:bold>\n              <jats:italic>~<\/jats:italic>\n            <\/jats:bold>\n            1200\u00b0C over a Pt catalyst. Ammonia synthesis entails several complex, highly emitting processes. Plasma-assisted HCN synthesis directly from CH\n            <jats:sub>4<\/jats:sub>\n            and nitrogen (N\n            <jats:sub>2<\/jats:sub>\n            ) could be pivotal for on-demand HCN production. Here, we evaluate the potential of dielectric barrier discharge (DBD) N\n            <jats:sub>2<\/jats:sub>\n            \/CH\n            <jats:sub>4<\/jats:sub>\n            plasma for decentralized catalyst-free selective HCN production. We demonstrate a single-step conversion of methane and nitrogen to HCN with a 72% yield at &lt;300\u00b0C. HCN is favored at low CH\n            <jats:sub>4<\/jats:sub>\n            concentrations with ethane (C\n            <jats:sub>2<\/jats:sub>\n            H\n            <jats:sub>6<\/jats:sub>\n            ) as the secondary product. We propose a first-principles microkinetic model with few electron impact reactions. The model accurately predicts primary product yields and elucidates that methyl radical (\u00b7CH\n            <jats:sub>3<\/jats:sub>\n            ) is a common intermediate in HCN and C\n            <jats:sub>2<\/jats:sub>\n            H\n            <jats:sub>6<\/jats:sub>\n            synthesis. Compared to current industrial processes, N\n            <jats:sub>2<\/jats:sub>\n            \/CH\n            <jats:sub>4<\/jats:sub>\n            DBD plasma can achieve minimal CO\n            <jats:sub>2<\/jats:sub>\n            emissions.\n          <\/jats:p>","DOI":"10.1126\/sciadv.adl4246","type":"journal-article","created":{"date-parts":[[2024,3,29]],"date-time":"2024-03-29T17:59:13Z","timestamp":1711735153000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":24,"title":["Direct HCN synthesis via plasma-assisted conversion of methane and nitrogen"],"prefix":"10.1126","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5094-4219","authenticated-orcid":true,"given":"Nefeli S.","family":"Kamarinopoulou","sequence":"first","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3968-7642","authenticated-orcid":true,"given":"Gerhard R.","family":"Wittreich","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6795-8403","authenticated-orcid":true,"given":"Dionisios G.","family":"Vlachos","sequence":"additional","affiliation":[{"name":"Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE, USA."},{"name":"Delaware Energy Institute, University of Delaware, Newark, DE, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"crossref","unstructured":"E. Gail S. Gos R. Kulzer J. Lor\u00f6sch A. Rubo M. Sauer R. Kellens J. Reddy N. Steier W. Hasenpusch Cyano compounds inorganic in Ullmann\u2019s Encyclopedia of Industrial Chemistry (Wiley-VCH ed. 7 2011) vol. 40.","DOI":"10.1002\/14356007.a08_159.pub3"},{"key":"e_1_3_2_3_2","unstructured":"B. Blackwell C. Fallon G. Kirby M. Mehdizadeh T. A. Koch C. J. Pereira S. K. 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Subramani Hydrogen and Syngas Production and Purification Technologies (John Wiley and Sons 2009).","DOI":"10.1002\/9780470561256"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.coche.2023.100927"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1021\/cs400993w"},{"key":"e_1_3_2_11_2","doi-asserted-by":"crossref","unstructured":"J. Meichsner M. Schmidt R. Schneider H. E. Wagner Nonthermal Plasma Chemistry and Physics (2012).","DOI":"10.1201\/b12956"},{"key":"e_1_3_2_12_2","doi-asserted-by":"crossref","unstructured":"A. Fridman Plasma Chemistry (Cambridge Univ. 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