Dry reforming of methane on a highly-active Ni-CeO2 catalyst: Effects of metal-support interactions on C–H bond breaking
- State Univ. of New York at Stony Brook, Stony Brook, NY (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- CONICET-Univ. Nacional de Rosario (Argentina)
- Univ. of Wyoming, Laramie, WY (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- CIC Energigune, Alava (Spain)
- Instituto de Catalisis y Petroleoquimica, CSIC, Madrid (Spain)
- State Univ. of New York at Stony Brook, Stony Brook NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Ni-CeO 2 is a highly efficient, stable and non-expensive catalyst for methane dry reforming at relative low temperatures (700 K). The active phase of the catalyst consists of small nanoparticles of nickel dispersed on partially reduced ceria. Experiments of ambient pressure XPS indicate that methane dissociates on Ni/CeO2 at temperatures as low as 300 K, generating CH x and CO x species on the surface of the catalyst. Strong metal–support interactions activate Ni for the dissociation of methane. The results of density-functional calculations show a drop in the effective barrier for methane activation from 0.9 eV on Ni(111) to only 0.15 eV on Ni/CeO 2-x (111). At 700 K, under methane dry reforming conditions, no signals for adsorbed CH x or C species are detected in the C 1s XPS region. The reforming of methane proceeds in a clean and efficient way.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704; AC02-05CH11231
- OSTI ID:
- 1333199
- Alternate ID(s):
- OSTI ID: 1378983; OSTI ID: 1400562
- Report Number(s):
- BNL-113195-2016-JA; R&D Project: CO040; KC0302010
- Journal Information:
- Angewandte Chemie (International Edition), Vol. 55, Issue 26; ISSN 1433-7851
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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