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Calcination Atmosphere Regulated Morphology and Catalytic Performance of Pt/SiO 2 in Gas‐phase Oxidative Dehydrogenation of KA‐oil
Author(s) -
Hong Wei,
Wang ZhiQiang,
Zou Shihui,
Zhou Yuheng,
Lu Linfang,
Zhou Qiuyue,
Gong XueQing,
Fan Jie
Publication year - 2018
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201801279
Subject(s) - dehydrogenation , cyclohexanol , calcination , cyclohexanone , catalysis , chemistry , chemical engineering , adsorption , nanoparticle , materials science , inorganic chemistry , organic chemistry , nanotechnology , engineering
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/SiO 2 , we successfully regulated the morphology of Pt nanoparticles and optimized their catalytic performance in ODH of KA‐oil. Pt/SiO 2 calcined in O 2 atmosphere showed a cube‐like morphology and achieved a 78.1 % cyclohexanone yield at 170 °C, which surpassed its counterpart calcined in H 2 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.