{"title":"用于燃料低温催化燃烧的立方氧化铈基纳米催化剂的表面氧空位与储氧能力比较","authors":"","doi":"10.1016/j.jiec.2024.05.018","DOIUrl":null,"url":null,"abstract":"<div><p>A series of praseodymium (Pr) doped cubic ceria nanoparticles (CeO<sub>2</sub> NPs) with different ratio of cerium (Ce) and ‘Pr’ was synthesized by hydrothermal method. Manganese (‘Mn’) doped cubic CeO<sub>2</sub> NPs with 10:90 ratio of Mn:Ce and undoped cubic CeO<sub>2</sub> NPs have also been synthesized. The crystalline structure of the synthesized nanomaterials has been studied by powder X-Ray diffraction (XRD) and Rietveld analysis. In the Raman spectrum, the intensity of F<sub>2g</sub> signal at 450–460 cm<sup>−1</sup> decreased while the intensity of extrinsic vacancy at 570–580 cm<sup>−1</sup> increased by doping with ‘Pr’ or ‘Mn’ in cubic CeO<sub>2</sub> nanocrystals. X-ray photoelectron spectroscopy (XPS) results showed that surface oxygen vacancy of cubic CeO<sub>2</sub> NPs increased by doping with 25 % of ‘Pr’. The ‘Pr’ doped CeO<sub>2</sub> NPs (Pr:Ce = 25:75) exhibited higher surface adsorption dynamic oxygen storage capacity (OSC<sub>Dyn</sub>), while the ‘Mn’ doped cubic CeO<sub>2</sub> NPs (Mn:Ce = 10:90) showed increased bulk lattice OSC<sub>Dyn</sub>. The ‘Pr’ doped cubic CeO<sub>2</sub> NPs (Pr:Ce = 25:75) exhibited better low temperature catalytic combustion activity, and their nanodispersion in mineral turpentine oil (MTO) added liquefied petroleum gas (LPG) exhibited better fuel efficiency with a flame temperature of 912 °C.</p></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"139 ","pages":"Pages 434-443"},"PeriodicalIF":5.9000,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Surface oxygen vacancy vs oxygen storage capacity in cubic ceria based nanocatalysts for low temperature catalytic combustion of fuels\",\"authors\":\"\",\"doi\":\"10.1016/j.jiec.2024.05.018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A series of praseodymium (Pr) doped cubic ceria nanoparticles (CeO<sub>2</sub> NPs) with different ratio of cerium (Ce) and ‘Pr’ was synthesized by hydrothermal method. Manganese (‘Mn’) doped cubic CeO<sub>2</sub> NPs with 10:90 ratio of Mn:Ce and undoped cubic CeO<sub>2</sub> NPs have also been synthesized. The crystalline structure of the synthesized nanomaterials has been studied by powder X-Ray diffraction (XRD) and Rietveld analysis. In the Raman spectrum, the intensity of F<sub>2g</sub> signal at 450–460 cm<sup>−1</sup> decreased while the intensity of extrinsic vacancy at 570–580 cm<sup>−1</sup> increased by doping with ‘Pr’ or ‘Mn’ in cubic CeO<sub>2</sub> nanocrystals. X-ray photoelectron spectroscopy (XPS) results showed that surface oxygen vacancy of cubic CeO<sub>2</sub> NPs increased by doping with 25 % of ‘Pr’. The ‘Pr’ doped CeO<sub>2</sub> NPs (Pr:Ce = 25:75) exhibited higher surface adsorption dynamic oxygen storage capacity (OSC<sub>Dyn</sub>), while the ‘Mn’ doped cubic CeO<sub>2</sub> NPs (Mn:Ce = 10:90) showed increased bulk lattice OSC<sub>Dyn</sub>. The ‘Pr’ doped cubic CeO<sub>2</sub> NPs (Pr:Ce = 25:75) exhibited better low temperature catalytic combustion activity, and their nanodispersion in mineral turpentine oil (MTO) added liquefied petroleum gas (LPG) exhibited better fuel efficiency with a flame temperature of 912 °C.</p></div>\",\"PeriodicalId\":363,\"journal\":{\"name\":\"Journal of Industrial and Engineering Chemistry\",\"volume\":\"139 \",\"pages\":\"Pages 434-443\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2024-05-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Industrial and Engineering Chemistry\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1226086X24003241\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Industrial and Engineering Chemistry","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1226086X24003241","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Surface oxygen vacancy vs oxygen storage capacity in cubic ceria based nanocatalysts for low temperature catalytic combustion of fuels
A series of praseodymium (Pr) doped cubic ceria nanoparticles (CeO2 NPs) with different ratio of cerium (Ce) and ‘Pr’ was synthesized by hydrothermal method. Manganese (‘Mn’) doped cubic CeO2 NPs with 10:90 ratio of Mn:Ce and undoped cubic CeO2 NPs have also been synthesized. The crystalline structure of the synthesized nanomaterials has been studied by powder X-Ray diffraction (XRD) and Rietveld analysis. In the Raman spectrum, the intensity of F2g signal at 450–460 cm−1 decreased while the intensity of extrinsic vacancy at 570–580 cm−1 increased by doping with ‘Pr’ or ‘Mn’ in cubic CeO2 nanocrystals. X-ray photoelectron spectroscopy (XPS) results showed that surface oxygen vacancy of cubic CeO2 NPs increased by doping with 25 % of ‘Pr’. The ‘Pr’ doped CeO2 NPs (Pr:Ce = 25:75) exhibited higher surface adsorption dynamic oxygen storage capacity (OSCDyn), while the ‘Mn’ doped cubic CeO2 NPs (Mn:Ce = 10:90) showed increased bulk lattice OSCDyn. The ‘Pr’ doped cubic CeO2 NPs (Pr:Ce = 25:75) exhibited better low temperature catalytic combustion activity, and their nanodispersion in mineral turpentine oil (MTO) added liquefied petroleum gas (LPG) exhibited better fuel efficiency with a flame temperature of 912 °C.
期刊介绍：
Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.
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