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Title: Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants

Journal Article · · Journal of Catalysis
 [1];  [2];  [2];  [2];  [2];  [3];  [4];  [2];  [5];  [2];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York (SUNY) Stony Brook, Stony Brook, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Instituto de Catalisis y Petroleoquimica, Madrid (Spain); Cracow Univ. of Technology, Krakow (Poland)
  4. Instituto de Catalisis y Petroleoquimica, Madrid (Spain)
  5. State Univ. of New York (SUNY) Stony Brook, Stony Brook, NY (United States)
+ Show Author Affiliations

In this study, the ethanol steam reforming (ESR) reaction was examined over a series of Ni-W-Ce oxide catalysts. The structures of the catalysts were characterized using in-situ techniques including X-ray diffraction, Pair Distribution Function, X-ray absorption fine structure and transmission electron microscopy; while possible surface intermediates for the ESR reaction were investigated by Diffuse Reflectance Infrared Fourier Transform Spectroscopy. In these materials, all the W and part of the Ni were incorporated into the CeO₂ lattice, with the remaining Ni forming highly dispersed nano NiO (< 2 nm) outside the Ni-W-Ce oxide structure. The nano NiO was reduced to Ni under ESR conditions. The Ni-W-Ce systeme exhibited a much larger lattice strain than those seen for Ni-Ce and W-Ce. Synergistic effects between Ni and W inside ceria produced a substantial amount of defects and O vacancies that led to high catalytic activity, selectivity and stability (i.e. resistance to coke formation) during ethanol steam reforming.

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; AC02-98CH10886
OSTI ID:
1183268
Alternate ID(s):
OSTI ID: 1244579
Report Number(s):
BNL-107701-2015-JA; R&D Project: CO-009; KC0302010
Journal Information:
Journal of Catalysis, Vol. 321, Issue C; ISSN 0021-9517
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 41 works
Citation information provided by
Web of Science

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Cited By (4)

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products journal February 2019
Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming journal December 2019
Mesoporous Ni/Ce 1−x Ni x O 2−y heterostructure as an efficient catalyst for converting greenhouse gas to H 2 and syngas journal January 2016
Selective CO Production by Photoelectrochemical Methane Oxidation on TiO2 journal April 2018

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
national synchrotron light source
steam reforming of ethanol
lattice strain
oxygen vacancies
nickel
ceria
tungsten
DRIFTS
XRD
XAFS