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Novel manganese-promoted inverse CeO2/CuO catalyst: In situ characterization and activity for the water-gas shift reaction

Journal Article · · Catalysis Today
In this study, the behavior of a novel manganese-promoted inverse CeO2/CuO catalyst under water-gas shift (WGS) reaction conditions is studied. CeO2/CuO and CeO2/Mn-CuO catalysts are characterized by X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopy (XPS). Structure/activity relationships and redox characteristics are established on the basis of such results along with those of in situ XRD and X-ray absorption fine structure (XAFS) experiments performed either under WGS or CO-temperature programmed reduction (TPR) conditions. The manganese coprecipitated together with the copper during the preparation of the samples and the Mn-CuO phase strongly affected the size and chemical properties of the catalytically-active ceria nanoparticles. A manganese-induced enhancement on the WGS activity was observed. As a result, differences in the characteristics of the supported ceria particles are proposed as most relevant to explain the observed Mn-promoting effect.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
Ministerio de Economía, Industria y Competitividad; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1489744
Alternate ID(s):
OSTI ID: 1871268
Report Number(s):
BNL--210847-2019-JAAM
Journal Information:
Catalysis Today, Journal Name: Catalysis Today Vol. 339; ISSN 0920-5861
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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