期刊
CHEMCATCHEM
卷 10, 期 9, 页码 2096-2106出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201701968
关键词
carbon monoxide oxidation; ceria nanorods; copper oxide; hydrogen; modification
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:NH3 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.
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