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AuthorZedan, Abdallah F.
AuthorMohamed, Assem T.
AuthorEl-Shall, M. Samy
AuthorAlQaradawi, Siham Y.
AuthorAlJaber, Amina S.
Available date2024-03-25T06:42:38Z
Publication Date2018
Publication NameRSC Advances
ResourceScopus
ISSN20462069
URIhttp://dx.doi.org/10.1039/c8ra03623c
URIhttp://hdl.handle.net/10576/53403
AbstractCopper oxide (CuO) nanoparticles have received considerable interest as active and inexpensive catalysts for various gas–solid reactions. The CuO reducibility and surface reactivity are of crucial importance for the high catalytic activity. Herein, we demonstrate that the reducibility and stability of CuO nanoparticles can be controlled and tailored for the high catalytic activity of CO oxidation. The synthesized CuO nanoparticles possessed enhanced reducibility in CO atmosphere at lower reduction temperature of 126 °C compared to 284 °C for that of reference CuO particles. Moreover, the CuO catalysts with tailored reducibility demonstrated a reaction rate of 35 μmol s−1 g−1 and an apparent activation energy of 75 kJ mol−1. Furthermore, the tailored catalysts exhibited excellent long-term stability for CO oxidation for up to 48 h on stream. These readily-reducible CuO nanoparticles could serve as efficient, inexpensive and durable catalysts for CO oxidation at low temperatures.
SponsorThis work was made possible by the grant number NPRP 8-1912-1-354 from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of the authors. The authors would like to thank Mr Mahmoud M. Tarfaya and Mr Belal S. Hussien for their assistance in the laboratory.
Languageen
PublisherRoyal Society of Chemistry
SubjectActivation energy
Atmospheric temperature
Catalytic oxidation
Copper oxides
Nanoparticles
Oxidation
Synthesis (chemical)
Apparent activation energy
CuO nanoparticles
Gas-solid reaction
Long term stability
Low temperatures
Low-temperature CO oxidation
Reduction temperatures
Surface reactivity
Catalyst activity
TitleTailoring the reducibility and catalytic activity of CuO nanoparticles for low temperature CO oxidation
TypeArticle
Pagination19499-19511
Issue Number35
Volume Number8
dc.accessType Open Access


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