{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:27:01Z","timestamp":1760149621155,"version":"build-2065373602"},"reference-count":71,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,21]],"date-time":"2023-08-21T00:00:00Z","timestamp":1692576000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"European Union","award":["1\/1.1.1\/2020","POIR.01.01.01-00-0015\/20-00","04\/050\/RGJ22\/0143"],"award-info":[{"award-number":["1\/1.1.1\/2020","POIR.01.01.01-00-0015\/20-00","04\/050\/RGJ22\/0143"]}]},{"name":"Rector of the Silesian University of Technology","award":["1\/1.1.1\/2020","POIR.01.01.01-00-0015\/20-00","04\/050\/RGJ22\/0143"],"award-info":[{"award-number":["1\/1.1.1\/2020","POIR.01.01.01-00-0015\/20-00","04\/050\/RGJ22\/0143"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This paper presents a not previously reported catalytic system consisting of transition metals Co2+ and Mn2+ and alkyl nitrites R-ONO for the oxidation of cyclohexanone with oxygen to adipic acid. The influence of type and amount of catalyst, temperature, time, and type of raw material on conversion and product composition were determined. In addition, the oxidation of selected cyclic ketones such as cyclopentanone, cyclohexanone, cyclooctanone, cyclododecanone, 2-methylcyclohexanone, 3-methylcyclohexanone, and 4-methylcyclohexanone in acetic acid as solvent was performed. The results showed that R-ONO systems, under established reaction conditions, form NO\u00b7radicals, which oxidize to NO2 under a strong oxidization reaction environment. The Co2+\/Mn2+\/NO2 system was shown to be highly active in the oxidation of cyclic ketones with oxygen.<\/jats:p>","DOI":"10.3390\/ma16165722","type":"journal-article","created":{"date-parts":[[2023,8,22]],"date-time":"2023-08-22T00:46:22Z","timestamp":1692665182000},"page":"5722","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Selective Oxidation of Cyclohexanone to Adipic Acid Using Molecular Oxygen in the Presence of Alkyl Nitrites and Transition Metals as Catalysts"],"prefix":"10.3390","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8620-1759","authenticated-orcid":false,"given":"Dawid","family":"Lisicki","sequence":"first","affiliation":[{"name":"Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4955-6205","authenticated-orcid":false,"given":"Beata","family":"Orli\u0144ska","sequence":"additional","affiliation":[{"name":"Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, Akademicka 2A, 44-100 Gliwice, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomasz","family":"Martyniuk","sequence":"additional","affiliation":[{"name":"Grupa Azoty Zak\u0142ady Azotowe \u201cPu\u0142awy\u201d S.A., Al. Tysi\u0105clecia Pa\u0144stwa Polskiego 13, 24-110 Pu\u0142awy, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7817-3601","authenticated-orcid":false,"given":"Krzysztof","family":"Dziuba","sequence":"additional","affiliation":[{"name":"Grupa Azoty Zak\u0142ady Azotowe \u201cPu\u0142awy\u201d S.A., Al. Tysi\u0105clecia Pa\u0144stwa Polskiego 13, 24-110 Pu\u0142awy, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jakub","family":"Bi\u0144czak","sequence":"additional","affiliation":[{"name":"Grupa Azoty Zak\u0142ady Azotowe \u201cPu\u0142awy\u201d S.A., Al. 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