{"title":"Manganese supported on Sr-induced AlO4 and AlO6 catalyst for complete oxidation of propene: effect of preparation methods","authors":"Jyoti Waikar, Pavan More","doi":"10.1007/s12034-024-03172-w","DOIUrl":null,"url":null,"abstract":"<div><p>The complete oxidation of propene was done by using a series of MnAl and Sr-doped MnAl catalysts prepared by deposition precipitation followed by the coprecipitation method. The concentration of Mn<sub>2</sub>O<sub>3</sub> and SrAl<sub>2</sub>O<sub>4</sub> active phases increases with the relative content of reactive oxygen species. These species enhance the reducibility of catalysts, which further increases the activity of C<sub>3</sub>H<sub>6</sub> oxidation at relatively low temperatures. Characterization techniques like X-ray diffraction, FTIR, BET, X-ray photoelectron spectroscopy, temperature-programmed reduction, high-resolution transmission electron microscopy and <sup>27</sup>Al NMR were used to determine the physicochemical characteristics of the catalysts. The complete propene oxidation activity was observed on MnSr<sub>0.3</sub>Al at 237°C. The effect of preparation methods indicates that the coprecipitation followed by the deposition precipitation approach strengthens the interaction between Sr and Mn. It also improved the dispersion of Sr and Mn on the surface of Al<sub>2</sub>O<sub>3</sub> compared to the successive impregnation and deposition precipitation method.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 2","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03172-w","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The complete oxidation of propene was done by using a series of MnAl and Sr-doped MnAl catalysts prepared by deposition precipitation followed by the coprecipitation method. The concentration of Mn2O3 and SrAl2O4 active phases increases with the relative content of reactive oxygen species. These species enhance the reducibility of catalysts, which further increases the activity of C3H6 oxidation at relatively low temperatures. Characterization techniques like X-ray diffraction, FTIR, BET, X-ray photoelectron spectroscopy, temperature-programmed reduction, high-resolution transmission electron microscopy and 27Al NMR were used to determine the physicochemical characteristics of the catalysts. The complete propene oxidation activity was observed on MnSr0.3Al at 237°C. The effect of preparation methods indicates that the coprecipitation followed by the deposition precipitation approach strengthens the interaction between Sr and Mn. It also improved the dispersion of Sr and Mn on the surface of Al2O3 compared to the successive impregnation and deposition precipitation method.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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