Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 274, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.119090
Keywords
Ru0.05Ce0.95O2-y on alumina; Hierarchical catalysts; Catalyst regeneration; Alumina functionalization; Propane oxidation
Funding
- National Science Centre in Poland [2016/23/N/ST4/03177]
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In this work, we synthesized and characterized a novel catalyst containing Ru(0.05)Ce(0.)(95)O(2-y )nanoparticles (2-5 nm) deposited on the functionalized gamma-Al2O3 support. The catalyst was studied with a wide range of ex-situ (STEM-HAADF/EDS, TEM, BET, Raman spectroscopy, XRD) and in situ methods (TPR-TPO, XPS with in situ thermal treatments) in order to determine its behavior during the successive reduction-oxidation treatments. The system shows good reversibility of the noble metal ex-solution on the particles' surface and its redispersion in the cerium oxide structure, with excellent stability of nanoparticles' morphology. The catalyst was active in the propane oxidation at 210 degrees C and could be reactivated by heating in hydrogen at 500 degrees C.
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