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Title: Room-temperature activation of methane and dry re-forming with CO2 on Ni-CeO2 (111) surfaces: Effect of Ce3+ sites and metal–support interactions on C–H bond cleavage

Journal Article · · ACS Catalysis
 [1];  [2];  [3];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Instituto de Fisica Rosario (IFIR, CONICET-UNR), Santa Fe (Argentina)
  2. Univ. Central de Venezuela, Caracas (Venezuela)
  3. State Univ. of New York, Stony Brook, NY (United States)
  4. CIC Energigune, Alava (Spain)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States)
  6. State Univ. of New York, Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  7. Instituto de Catalisis y Petroleoquimica (ICP-CSIC), Madrid (Spain)

The results of core-level photoemission indicate that Ni-CeO2(111) surfaces with small or medium coverages of nickel are able to activate methane at 300 K, producing adsorbed CHx and COx (x = 2, 3) groups. Calculations based on density functional theory predict a relatively low activation energy of 0.6–0.7 eV for the cleavage of the first C–H bond in the adsorbed methane molecule. Ni and O centers of ceria work in a cooperative way in the dissociation of the C–H bond at room temperature, where a low Ni loading is crucial for the catalyst activity and stability. The strong electronic perturbations in the Ni nanoparticles produced by the ceria supports of varying natures, such as stoichiometric and reduced, result in a drastic change in their chemical properties toward methane adsorption and dissociation as well as the dry reforming of methane reaction. Lastly, the coverage of Ni has a drastic effect on the ability of the system to dissociate methane and catalyze the dry re-forming process.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704
OSTI ID:
1333201
Report Number(s):
BNL-113197-2016-JA; R&D Project: CO040; KC0302010
Journal Information:
ACS Catalysis, Journal Name: ACS Catalysis; ISSN 2155-5435
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 119 works
Citation information provided by
Web of Science

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Ceria-based model catalysts: fundamental studies on the importance of the metal–ceria interface in CO oxidation, the water–gas shift, CO 2 hydrogenation, and methane and alcohol reforming journal January 2017
Exotic electronic structures of Sm x Ce 3−x O y (x = 0-3; y = 2-4) clusters and the effect of high neutral density of low-lying states on photodetachment transition intensities journal August 2018
A Review on Bimetallic Nickel-Based Catalysts for CO 2 Reforming of Methane journal August 2017
Low-temperature activation of methane on doped single atoms: descriptor and prediction journal January 2018
A robust fuel cell operated on nearly dry methane at 500 °C enabled by synergistic thermal catalysis and electrocatalysis journal October 2018
Synergistic catalysis between nano-Ni and nano semiconductor CeO 2 of Ni hybrid nanostructured catalysts for highly efficient selective hydrogenation journal January 2019
Ce 4+ as a facile and versatile surface modification reagent for templated synthesis in electrical applications journal January 2019
Hydroxide promotes carbon dioxide electroreduction to ethanol on copper via tuning of adsorbed hydrogen journal December 2019