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Influence of the Hydrothermal Parameters on the Physicochemical Characteristics of Cu−Ce Oxide Nanostructures
Author(s) -
Kappis Konstantinos,
Papavasiliou Joan
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901108
Subject(s) - x ray photoelectron spectroscopy , catalysis , hydrothermal circulation , prox , scanning electron microscope , raman spectroscopy , desorption , adsorption , oxide , copper oxide , thermal desorption spectroscopy , chemistry , chemical engineering , hydrothermal synthesis , materials science , inorganic chemistry , analytical chemistry (journal) , carbon monoxide , organic chemistry , engineering , composite material , physics , optics
A series of highly active and selective CuCeO x catalysts was prepared via appropriate tuning of the parameters (concentration, temperature) of a citrates‐hydrothermal method. The obtained catalysts were characterized by various physicochemical techniques such as (in‐situ) X‐ray diffraction (XRD), N 2 adsorption‐desorption, Raman spectroscopy, X‐ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), while preferential oxidation of CO (CO‐PROX) in H 2 ‐rich stream was used as probe reaction. Suitable modification of the hydrothermal parameters resulted in catalysts with remarkable performance in CO‐PROX reaction, which was strongly dependent on the concentration of oxygen vacancies and reduced copper species.