Novel manganese-promoted inverse CeO2/CuO catalyst: In situ characterization and activity for the water-gas shift reaction
Journal Article
·
· Catalysis Today
- Instituto de Catalisis y Petroleoquimica, CSIC, Madrid (Spain)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
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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