Premium
A Novel Post‐Synthesis Modification of CuO‐CeO 2 Catalysts: Effect on Their Activity for Selective CO Oxidation
Author(s) -
Papavasiliou Joan,
Rawski Michał,
Vakros John,
Avgouropoulos George
Publication year - 2018
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.201701968
Subject(s) - catalysis , copper , nanorod , dispersion (optics) , copper oxide , oxide , surface modification , inorganic chemistry , ammonia , chemistry , redox , chemical engineering , materials science , nanotechnology , organic chemistry , engineering , optics , physics
Copper oxide nanoparticles were dispersed onto the surface of ceria nanorods, while a post‐synthesis modification was applied to the reference sample using ammonia solutions. The modified catalysts were characterized with a variety of analytical techniques, providing useful information on the effect of the Cu:NH 3 ratio, employed in the modification step, on the physicochemical properties. Re‐dispersion of the active copper species under extremely basic conditions promoted the reducibility and the oxygen mobility of the catalyst, thus resulting in a more active and selective catalyst for preferential CO oxidation.