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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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1183268
Alternate Identifier(s):
OSTI ID: 1244579
Report Number(s):
BNL-107701-2015-JA
Journal ID: ISSN 0021-9517; R&D Project: CO-009; KC0302010
Grant/Contract Number:  
SC00112704; AC02-98CH10886
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Catalysis
Additional Journal Information:
Journal Volume: 321; Journal Issue: C; Journal ID: ISSN 0021-9517
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Johnson-Peck, Aaron C., Zhao, Fuzhen, Michorczyk, Piotr, Kubacka, Anna, Stach, Eric A., Fernández-García, Marcos, Senanayake, Sanjaya D., and Rodriguez, José A. Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants. United States: N. p., 2014. Web. doi:10.1016/j.jcat.2014.10.017.
Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Johnson-Peck, Aaron C., Zhao, Fuzhen, Michorczyk, Piotr, Kubacka, Anna, Stach, Eric A., Fernández-García, Marcos, Senanayake, Sanjaya D., & Rodriguez, José A. Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants. United States. https://doi.org/10.1016/j.jcat.2014.10.017
Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Johnson-Peck, Aaron C., Zhao, Fuzhen, Michorczyk, Piotr, Kubacka, Anna, Stach, Eric A., Fernández-García, Marcos, Senanayake, Sanjaya D., and Rodriguez, José A. 2014. "Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants". United States. https://doi.org/10.1016/j.jcat.2014.10.017. https://www.osti.gov/servlets/purl/1183268.
@article{osti_1183268,
title = {Superior performance of Ni–W–Ce mixed-metal oxide catalysts for ethanol steam reforming: Synergistic effects of W- and Ni-dopants},
author = {Liu, Zongyuan and Xu, Wenqian and Yao, Siyu and Johnson-Peck, Aaron C. and Zhao, Fuzhen and Michorczyk, Piotr and Kubacka, Anna and Stach, Eric A. and Fernández-García, Marcos and Senanayake, Sanjaya D. and Rodriguez, José A.},
abstractNote = {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.},
doi = {10.1016/j.jcat.2014.10.017},
url = {https://www.osti.gov/biblio/1183268}, journal = {Journal of Catalysis},
issn = {0021-9517},
number = C,
volume = 321,
place = {United States},
year = {Wed Nov 26 00:00:00 EST 2014},
month = {Wed Nov 26 00:00:00 EST 2014}
}

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Cited by: 41 works
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Works referencing / citing this record:

Advances in catalytic conversion of methane and carbon dioxide to highly valuable products
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Optimizing the preparation of Ni‐Ce‐Pr catalysts for efficient hydrogen production by n ‐dodecane steam reforming
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Selective CO Production by Photoelectrochemical Methane Oxidation on TiO2
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