Oxidative Dehydrogenation of Ethane with CO2 over Au/CeO2 Nanorod Catalysts

Oxidative Dehydrogenation of Ethane with CO2 over Au/CeO2 Nanorod Catalysts

Dehydrogenation of ethane to ethylene in the presence or absence of CO 2 over Au catalysts supported on nanorod and nanoparticle ceria was investigated. The nanorod CeO 2 supported Au exhibits higher activity as well as higher stability, with an ethane conversion of 17% and ethylene selectivity of 9...

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Veröffentlicht in:Catalysis letters 2018-06, Vol.148 (6), p.1634-1642
Hauptverfasser: Lei, Tianqi, Miao, Changxi, Hua, Weiming, Yue, Yinghong, Gao, Zi
Format: Artikel
Sprache:eng
Schlagworte:
Carbon dioxide
Catalysis
Catalysts
Cerium oxides
Chemistry
Chemistry and Materials Science
Deactivation
Dehydrogenation
Ethane
Ethylene
Gold
Industrial Chemistry/Chemical Engineering
Nanoparticles
Nanorods
Organometallic Chemistry
Physical Chemistry
Selectivity
Stability
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Zusammenfassung:Dehydrogenation of ethane to ethylene in the presence or absence of CO 2 over Au catalysts supported on nanorod and nanoparticle ceria was investigated. The nanorod CeO 2 supported Au exhibits higher activity as well as higher stability, with an ethane conversion of 17% and ethylene selectivity of 98% without any observable trend of deactivation in 6 h. The surface oxygen reducibility of the catalysts plays an important role in the dehydrogenation which can be greatly enhanced by the addition of Au. The promoting effect of CO 2 on stability is caused by reducing coke by the Boudouard reaction and supplementing the reducible oxygen specie of CeO 2 surface sustainably. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-018-2389-1