{"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":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 4","pages":"386 - 395"},"PeriodicalIF":1.3000,"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\":682,\"journal\":{\"name\":\"Kinetics and Catalysis\",\"volume\":\"65 4\",\"pages\":\"386 - 395\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Kinetics and Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0023158423601134\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kinetics and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0023158423601134","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","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：
Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
