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Title: Water-gas-shift over metal-free nanocrystalline ceria: An experimental and theoretical study

Journal Article · · ChemCatChem
 [1];  [2];  [1];  [3];  [3];  [4];  [5];  [6];  [1];  [5];  [5];  [1]
  1. Univ. of Connecticut, Storrs, CT (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York at Stony Brook, Stony Brook, NY (United States)
  3. Aarhus Univ. (Denmark)
  4. Technical Univ. of Catalonia- BarcelonaTech, Barcelona (Spain)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States)
  6. Univ. of Connecticut, Storrs, CT (United States); Tanta Univ., Tanta (Egypt)

Abstract A tandem experimental and theoretical investigation of a mesoporous ceria catalyst reveals the properties of the metal oxide are conducive for activity typically ascribed to metals, suggesting reduced Ce 3+ and oxygen vacancies are responsible for the inherent bi‐functionality of CO oxidation and dissociation of water required for facilitating the production of H 2 . The degree of reduction of the ceria, specifically the (1 0 0) face, is found to significantly influence the binding of reagents, suggesting reduced surfaces harbor the necessary reactive sites. The metal‐free catalysis of the reaction is significant for catalyst design considerations, and the suite of in situ analyses provides a comprehensive study of the dynamic nature of the high surface area catalyst system. This study postulates feasible improvements in catalytic activity may redirect the purpose of the water‐gas shift reaction from CO purification to primary hydrogen production.

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; SC0012704
OSTI ID:
1368675
Alternate ID(s):
OSTI ID: 1401890
Report Number(s):
BNL-114017-2017-JA; R&D Project: CO040; KC0302010
Journal Information:
ChemCatChem, Vol. 9, Issue 8; ISSN 1867-3880
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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