Calcination Atmosphere Regulated Morphology and Catalytic Performance of Pt/SiO2 in Gas‐phase Oxidative Dehydrogenation of KA‐oil. Issue 24 (28th November 2018)

• Record Type: Journal Article
• Authors: Hong, Wei; Wang, Zhi‐Qiang; Zou, Shihui; Zhou, Yuheng; Lu, Linfang; Zhou, Qiuyue; Gong, Xue‐Qing; Fan, Jie
• Is Part Of: ChemCatChem. Volume 10:Issue 24(2018)
• Page Start: 5689
• Page End: 5697
• Publication Date: 2018-11-28
• Subjects: Pt/SiO2 -- Calcination atmosphere -- Morphology -- Oxidative dehydrogenation -- KA-oil; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201801279
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: It is industrially attractive to produce cyclohexanone directly from gas‐phase oxidative dehydrogenation (ODH) of KA‐oil (a mixture of cyclohexanone and cyclohexanol) since extra alcohol‐ketone separation process can be potentially omitted. Herein, by simply tuning the calcination atmosphere of Pt/SiO2, we successfully regulated the morphology of Pt nanoparticles and optimized their catalytic performance in ODH of KA‐oil. Pt/SiO2 calcined in O2 atmosphere showed a cube‐like morphology and achieved a 78.1 % cyclohexanone yield at 170 °C, which surpassed its counterpart calcined in H2 and most of the reported catalysts. Further experimental and theoretical calculation results indicated that cubic Pt nanoparticles possessed stronger adsorption ability to cyclohexanol and therefore performed better in ODH of KA‐oil. Abstract : Pt does it again ! The morphology of Pt nanoparticles was successfully regulated by calcinating Pt/SiO2 catalysts in different atmospheres and achieved a 78.1 % cyclohexanone yield at 170 °C in oxidative dehydrogenation of KA‐oil.