{"title":"MnOx/MgAl2O4 催化剂上的乙酸乙酯催化完全氧化反应","authors":"Dong Peng, Qing Wang, Shaohong Zang, Liuye Mo","doi":"10.1134/S0023158423601134","DOIUrl":null,"url":null,"abstract":"<p>Volatile organic compounds (VOCs), play a crucial role as precursors of ozone (O<sub>3</sub>) and secondary organic aerosols, making them significant air pollutants. Efforts to effectively eliminate ethyl acetate (EA), a typical VOC in many industrial processes, has attracted significant attention worldwide. In this study, a catalyst consisting of MgAl<sub>2</sub>O<sub>4</sub> spinel prepared via the sol-gel method was adopted to support MnO<sub><i>x</i></sub> by incipient wetness impregnation for complete catalytic oxidation of EA. The prepared catalysts were characterized by XRD, SEM, TEM, BET, XPS and H<sub>2</sub>-TPR. It was found that the calcination temperature of the support is crucial for the catalytic activity. The optimal calcination temperature of the support is found to be 800°C, resulting in a perfect MgAl<sub>2</sub>O<sub>4</sub> spinel phase and a crystalline size of 8.3 nm. The optimized MnO<sub><i>x</i></sub>/MA-800 displayed high catalytic activity (<i>T</i><sub>95</sub> = 240°C) and stability due to its high reduction ability and high atomic ratios of Mn<sup>4+</sup>/Mn<sup>3+</sup> and O<sub>ads</sub>/O.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Catalytic Complete Oxidation of Ethyl Acetate on MnOx/MgAl2O4 Catalysts\",\"authors\":\"Dong Peng, Qing Wang, Shaohong Zang, Liuye Mo\",\"doi\":\"10.1134/S0023158423601134\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Volatile organic compounds (VOCs), play a crucial role as precursors of ozone (O<sub>3</sub>) and secondary organic aerosols, making them significant air pollutants. Efforts to effectively eliminate ethyl acetate (EA), a typical VOC in many industrial processes, has attracted significant attention worldwide. In this study, a catalyst consisting of MgAl<sub>2</sub>O<sub>4</sub> spinel prepared via the sol-gel method was adopted to support MnO<sub><i>x</i></sub> by incipient wetness impregnation for complete catalytic oxidation of EA. The prepared catalysts were characterized by XRD, SEM, TEM, BET, XPS and H<sub>2</sub>-TPR. It was found that the calcination temperature of the support is crucial for the catalytic activity. The optimal calcination temperature of the support is found to be 800°C, resulting in a perfect MgAl<sub>2</sub>O<sub>4</sub> spinel phase and a crystalline size of 8.3 nm. The optimized MnO<sub><i>x</i></sub>/MA-800 displayed high catalytic activity (<i>T</i><sub>95</sub> = 240°C) and stability due to its high reduction ability and high atomic ratios of Mn<sup>4+</sup>/Mn<sup>3+</sup> and O<sub>ads</sub>/O.</p>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2024-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0023158423601134\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0023158423601134","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Catalytic Complete Oxidation of Ethyl Acetate on MnOx/MgAl2O4 Catalysts
Volatile organic compounds (VOCs), play a crucial role as precursors of ozone (O3) and secondary organic aerosols, making them significant air pollutants. Efforts to effectively eliminate ethyl acetate (EA), a typical VOC in many industrial processes, has attracted significant attention worldwide. In this study, a catalyst consisting of MgAl2O4 spinel prepared via the sol-gel method was adopted to support MnOx by incipient wetness impregnation for complete catalytic oxidation of EA. The prepared catalysts were characterized by XRD, SEM, TEM, BET, XPS and H2-TPR. It was found that the calcination temperature of the support is crucial for the catalytic activity. The optimal calcination temperature of the support is found to be 800°C, resulting in a perfect MgAl2O4 spinel phase and a crystalline size of 8.3 nm. The optimized MnOx/MA-800 displayed high catalytic activity (T95 = 240°C) and stability due to its high reduction ability and high atomic ratios of Mn4+/Mn3+ and Oads/O.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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