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Oxidative Methane Conversion to Ethane on Highly Oxidized Pd/CeO2 Cata…

Year of publication
Title of paper
Oxidative Methane Conversion to Ethane on Highly Oxidized Pd/CeO2 Catalysts Below 400 °C
Author
[한정우 교수 연구실]
Publication in journal
ChemSusChem 13 (2020) pp677-681.
Publication date
2020.02.21

Abstract
Methane upgrading into more valuable chemicals has received much attention. Herein, we report oxidative methane conversion to ethane using gaseous O2 at low temperatures (<400
°C) and atmospheric pressure in a continuous reactor. A highly oxidized Pd deposited on ceria could produce ethane with a productivity as high as 0.84mmolgcat−1h
−1. The Pd−O−Pd sites, not Pd−O−Ce, were the active sites for the selective ethane production at low temperatures. Density functional theory calculations confirmed that the Pd−O−Pd site is energetically more advantageous for C−C coupling, whereas Pd−O−Ce promotes CH4 dehydrogenation. The ceria helped Pd maintain a highly oxidic state despite reductive CH4 flow. This work can provide new insight for methane upgrading into C2 species.
 

 

DOI: doi.org/10.1002/cssc.201903311
 

 

Link: https://onlinelibrary.wiley.com/doi/10.1002/cssc.201903311