{"title":"Enhancing Vinyl Acetate Hydroformylation with La-Decorated Rh/TiO<sub>2</sub> Nanotubes Catalysts.","authors":"Hongyuan Chuai, Baolin Zhu, Shoumin Zhang, WeiPing Huang","doi":"10.1002/cphc.202401016","DOIUrl":null,"url":null,"abstract":"<p><p>The influence of La promoter on the catalytic performance of Rh nanoparticles supported on TiO<sub>2</sub> nanotubes (TNTs) in the hydroformylation of vinyl acetate is investigated. The catalysts are characterized using inductively coupled plasma mass spectrometry, Brunauer-Emmett-Teller, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared, and H<sub>2</sub>/CO temperature-programmed desorption. The results indicate that an effect attributes to the formation of LaOx-Rh active sites during the catalytic reaction. The optimized Rh<sub>0.25</sub>-La/TNTs catalyst (0.14 wt% Rh, 0.29 wt% La) achieves a high vinyl acetate conversion of 89%, an aldehyde selectivity of 66%, and a remarkable turnover frequency of 5796 h<sup>-1</sup>.</p>","PeriodicalId":9819,"journal":{"name":"Chemphyschem","volume":" ","pages":"e2401016"},"PeriodicalIF":2.3000,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemphyschem","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1002/cphc.202401016","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The influence of La promoter on the catalytic performance of Rh nanoparticles supported on TiO2 nanotubes (TNTs) in the hydroformylation of vinyl acetate is investigated. The catalysts are characterized using inductively coupled plasma mass spectrometry, Brunauer-Emmett-Teller, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared, and H2/CO temperature-programmed desorption. The results indicate that an effect attributes to the formation of LaOx-Rh active sites during the catalytic reaction. The optimized Rh0.25-La/TNTs catalyst (0.14 wt% Rh, 0.29 wt% La) achieves a high vinyl acetate conversion of 89%, an aldehyde selectivity of 66%, and a remarkable turnover frequency of 5796 h-1.
期刊介绍：
ChemPhysChem is one of the leading chemistry/physics interdisciplinary journals (ISI Impact Factor 2018: 3.077) for physical chemistry and chemical physics. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies.
ChemPhysChem is an international source for important primary and critical secondary information across the whole field of physical chemistry and chemical physics. It integrates this wide and flourishing field ranging from Solid State and Soft-Matter Research, Electro- and Photochemistry, Femtochemistry and Nanotechnology, Complex Systems, Single-Molecule Research, Clusters and Colloids, Catalysis and Surface Science, Biophysics and Physical Biochemistry, Atmospheric and Environmental Chemistry, and many more topics. ChemPhysChem is peer-reviewed.
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