Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 115, Issue 33, Pages 8278-8283Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1806950115
Keywords
CO2 reduction; ethane dehydrogenation; metal-oxide interfaces; selectivity; heterogeneous catalysis
Categories
Funding
- US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences [DE-SC0012704]
- Office of Science of the DOE [DE-AC02-05CH11231]
Ask authors/readers for more resources
Ethylene (C2H4) is one of the most important raw materials for chemical industry. The tandem reactions of CO2-assisted dehydrogenation of ethane (C2H6) to ethylene creates an opportunity to effectively use the underutilized ethane from shale gas while mitigating anthropogenic CO2 emissions. Here we identify the most likely active sites over CeO2-supported NiFe catalysts by using combined in situ characterization with density-functional theory (DFT) calculations. The experimental and theoretical results reveal that the Ni-FeOx interfacial sites can selectively break the C-H bonds and preserve the C-C bond of C2H6 to produce ethylene, while the Ni-CeOx interfacial sites efficiently cleave all of the C-H and C-C bonds to produce synthesis gas. Controlled synthesis of the two distinct active sites enables rational enhancement of the ethylene selectivity for the CO2-assisted dehydrogenation of ethane.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available