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Title: Methanol steam reforming over Ni-CeO 2 model and powder catalysts: Pathways to high stability and selectivity for H 2/CO 2 production

Here, nickel-ceria has been reported as a very good catalysts for the reforming of methane. Here, the methanol steam reforming reaction on both powder (Ni-CeO 2) and model (Ni-CeO 2-x(111)) catalysts was investigated. The active phase evolution and surface species transformation on powder catalysts were studied via in situ X-ray diffraction (XRD) and diffuse reflectance infrared transform spectroscopy (DRIFTS). Phase transitions of NiO → NiC → Ni and CeO 2 → CeO 2-x were observed during the reaction. The simultaneous production of H 2/CO 2 demonstrates that the active phase of the catalysts contains metallic Ni supported over partially reduced ceria. The DRIFTS experiments indicate that a methoxy to formate transition is associated with the reduction of ceria whereas the formation of carbonate species results from the presence of metallic Ni. A study of the reaction of methanol with Ni-CeO 2-x(111) by X-ray photoelectron spectroscopy (XPS) points to the essential role of metal-support interactions in an oxygen transfer from ceria to Ni that contributes to the high selectivity of the catalysts.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Report Number(s):
BNL-114206-2017-JA
Journal ID: ISSN 0920-5861; R&D Project: CO040; KC0302010
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Catalysis Today
Additional Journal Information:
Journal Volume: 311; Journal ID: ISSN 0920-5861
Publisher:
Elsevier
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Methanol steam reforming; Nickel; Ceria; In-situ XRD; Ambient-pressure; XPS; DRIFTS
OSTI Identifier:
1377059

Liu, Zongyuan, Yao, Siyu, Johnston-Peck, Aaron, Xu, Wenqian, Rodriguez, Jose A., and Senanayake, Sanjaya D.. Methanol steam reforming over Ni-CeO2 model and powder catalysts: Pathways to high stability and selectivity for H2/CO2 production. United States: N. p., Web. doi:10.1016/j.cattod.2017.08.041.
Liu, Zongyuan, Yao, Siyu, Johnston-Peck, Aaron, Xu, Wenqian, Rodriguez, Jose A., & Senanayake, Sanjaya D.. Methanol steam reforming over Ni-CeO2 model and powder catalysts: Pathways to high stability and selectivity for H2/CO2 production. United States. doi:10.1016/j.cattod.2017.08.041.
Liu, Zongyuan, Yao, Siyu, Johnston-Peck, Aaron, Xu, Wenqian, Rodriguez, Jose A., and Senanayake, Sanjaya D.. 2017. "Methanol steam reforming over Ni-CeO2 model and powder catalysts: Pathways to high stability and selectivity for H2/CO2 production". United States. doi:10.1016/j.cattod.2017.08.041. https://www.osti.gov/servlets/purl/1377059.
@article{osti_1377059,
title = {Methanol steam reforming over Ni-CeO2 model and powder catalysts: Pathways to high stability and selectivity for H2/CO2 production},
author = {Liu, Zongyuan and Yao, Siyu and Johnston-Peck, Aaron and Xu, Wenqian and Rodriguez, Jose A. and Senanayake, Sanjaya D.},
abstractNote = {Here, nickel-ceria has been reported as a very good catalysts for the reforming of methane. Here, the methanol steam reforming reaction on both powder (Ni-CeO2) and model (Ni-CeO2-x(111)) catalysts was investigated. The active phase evolution and surface species transformation on powder catalysts were studied via in situ X-ray diffraction (XRD) and diffuse reflectance infrared transform spectroscopy (DRIFTS). Phase transitions of NiO → NiC → Ni and CeO2 → CeO2-x were observed during the reaction. The simultaneous production of H2/CO2 demonstrates that the active phase of the catalysts contains metallic Ni supported over partially reduced ceria. The DRIFTS experiments indicate that a methoxy to formate transition is associated with the reduction of ceria whereas the formation of carbonate species results from the presence of metallic Ni. A study of the reaction of methanol with Ni-CeO2-x(111) by X-ray photoelectron spectroscopy (XPS) points to the essential role of metal-support interactions in an oxygen transfer from ceria to Ni that contributes to the high selectivity of the catalysts.},
doi = {10.1016/j.cattod.2017.08.041},
journal = {Catalysis Today},
number = ,
volume = 311,
place = {United States},
year = {2017},
month = {8}
}