{"title":"介孔支持物对金纳米颗粒甲苯氧化活性的影响","authors":"Z. Bailiche, A. Berrichi, R. Bachir","doi":"10.1134/s0023158423600967","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Gold nanoparticles supported over mesoporous ceria (Au/CeO<sub>2</sub>), titania (Au/TiO<sub>2</sub>) and iron oxide (Au/Fe<sub>2</sub>O<sub>3</sub>) were prepared by deposition-precipitation with urea and used for toluene oxidation. The mesoporous CeO<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub>, andTiO<sub>2</sub> were synthesized employing a hard-template approach using SBA-15 as the template. The catalysts were characterized by BET, X-ray diffraction (XRD), H<sub>2</sub>-temperature programmed reduction (H<sub>2</sub>-TPR), diffuse reflectance UV-Vis spectroscopy (DR/UV-Vis), and high-resolution transmission electron microscopy (HRTEM). Based on the temperature required to achieve 50% toluene conversion in the oxidation reaction (<i>T</i><sub>50%</sub>), the activity sequence was Au/CeO<sub>2</sub> > Au/Fe<sub>2</sub>O<sub>3</sub> > Au/TiO<sub>2</sub>. The Au/CeO<sub>2</sub> catalyst was the most active catalyst, achieving 50% toluene conversion at 240°C and full toluene conversion at 295°C demonstrating high stability over successive catalytic runs.</p>","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2024-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect Ofmesoporous Supports on Gold Nanoparticles Activity in Toluene Oxidation\",\"authors\":\"Z. Bailiche, A. Berrichi, R. Bachir\",\"doi\":\"10.1134/s0023158423600967\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>Gold nanoparticles supported over mesoporous ceria (Au/CeO<sub>2</sub>), titania (Au/TiO<sub>2</sub>) and iron oxide (Au/Fe<sub>2</sub>O<sub>3</sub>) were prepared by deposition-precipitation with urea and used for toluene oxidation. The mesoporous CeO<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub>, andTiO<sub>2</sub> were synthesized employing a hard-template approach using SBA-15 as the template. The catalysts were characterized by BET, X-ray diffraction (XRD), H<sub>2</sub>-temperature programmed reduction (H<sub>2</sub>-TPR), diffuse reflectance UV-Vis spectroscopy (DR/UV-Vis), and high-resolution transmission electron microscopy (HRTEM). Based on the temperature required to achieve 50% toluene conversion in the oxidation reaction (<i>T</i><sub>50%</sub>), the activity sequence was Au/CeO<sub>2</sub> > Au/Fe<sub>2</sub>O<sub>3</sub> > Au/TiO<sub>2</sub>. The Au/CeO<sub>2</sub> catalyst was the most active catalyst, achieving 50% toluene conversion at 240°C and full toluene conversion at 295°C demonstrating high stability over successive catalytic runs.</p>\",\"PeriodicalId\":682,\"journal\":{\"name\":\"Kinetics and Catalysis\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Kinetics and Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1134/s0023158423600967\",\"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://doi.org/10.1134/s0023158423600967","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effect Ofmesoporous Supports on Gold Nanoparticles Activity in Toluene Oxidation
Abstract
Gold nanoparticles supported over mesoporous ceria (Au/CeO2), titania (Au/TiO2) and iron oxide (Au/Fe2O3) were prepared by deposition-precipitation with urea and used for toluene oxidation. The mesoporous CeO2, Fe2O3, andTiO2 were synthesized employing a hard-template approach using SBA-15 as the template. The catalysts were characterized by BET, X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR), diffuse reflectance UV-Vis spectroscopy (DR/UV-Vis), and high-resolution transmission electron microscopy (HRTEM). Based on the temperature required to achieve 50% toluene conversion in the oxidation reaction (T50%), the activity sequence was Au/CeO2 > Au/Fe2O3 > Au/TiO2. The Au/CeO2 catalyst was the most active catalyst, achieving 50% toluene conversion at 240°C and full toluene conversion at 295°C demonstrating high stability over successive catalytic runs.
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.
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