Nature and Surface Redox Properties of Copper(II)-Promoted Cerium(IV) Oxide CO-Oxidation Catalysts

2000 ◽  
Vol 12 (12) ◽  
pp. 3715-3725 ◽  
Author(s):  
Philip G. Harrison ◽  
Ian K. Ball ◽  
Wan Azelee ◽  
Wayne Daniell ◽  
Daniella Goldfarb
Keyword(s):  
Co Oxidation ◽  
Redox Properties ◽  
Oxidation Catalysts ◽  
Surface Redox

Pt and Ir supported on mixed Ce0.97Ru0.03O2 oxide as low-temperature CO oxidation catalysts

2021 ◽  
Author(s):  
R. Rangel ◽  
E. González-A ◽  
A. Solís-García ◽  
T.A. Zepeda ◽  
D.H. Galván ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Oxidation Catalysts ◽  
Low Temperature Co Oxidation

Surface redox properties of Rh/AlPO4 and Rh/AlPO4−SiO2 catalysts

1984 ◽  
Vol 26 (1-2) ◽  
pp. 73-77 ◽  
Author(s):  
J. M. Campelo ◽  
A. Garcia ◽  
D. Luna ◽  
J. M. Marinas
Keyword(s):  
Redox Properties ◽  
Surface Redox

Comparative study on redox properties in CO oxidation of layered oxides LnFe0.5Sb1.5O6 (Ln = La, Ce, Pr) synthesized by different methods

2020 ◽  
Vol 46 (17) ◽  
pp. 27725-27733
Author(s):  
O.G. Ellert ◽  
A.V. Egorysheva ◽  
E. Yu Liberman ◽  
S.V. Golodukhina ◽  
O.V. Arapova ◽  
...  
Keyword(s):  
Comparative Study ◽  
Co Oxidation ◽  
Redox Properties ◽  
Layered Oxides

Remarkable Activity of Nanoarchitectonics Mesoporous CuO/CeO2–TiO2 Prepared by Nanocasting and Deposition Precipitation Techniques

2020 ◽  
Vol 20 (5) ◽  
pp. 2791-2802
Author(s):  
Duangamol Ongmali ◽  
Sakollapath Pithakratanayothin ◽  
Sureerat Jampa ◽  
Apanee Luengnaruemitrchai ◽  
Thanyalak Chaisuwan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Co Oxidation ◽  
Crystallite Size ◽  
Oxygen Vacancies ◽  
Redox Properties ◽  
Oxygen Defect ◽  
Nitrate Salt ◽  
Hard Template ◽  
Different Levels

In this work, a ceria (CeO2) support was modified with titania (TiO2) by nanocasting using MCM-48 as a hard template and then loading Cu (as the nitrate salt) at different levels (3–9% by weight) by deposition-precipitation followed by calcination. The addition of TiO2 in MSP CeO2 revealed that the MSP CeO2 was significantly improved the oxygen vacancies of the catalyst by increasing the Ce3+ content from 38 to 75% and stabilizing the Ce3+ species by bonding with the oxygen as Ce(4f)-O(2p)-Ti(3d). Moreover, the bonding of MSP CeO2 with TiO2 generated the oxygen defect vacancies (s–Ti3+), allowing Cu2+ to occupy and be reduced to Cu+ during calcination. The smaller CeO2 crystallite size (2.7 nm) of 9Cu/CeO2–TiO2 increased the mass-specific CO-Oxidation, showing the best catalytic activity due to its highest redox properties, as determined by H2-TPR and also showing resistant property to water and carbon dioxide. Indeed, water was adsorbed on the Ce3+ sites, generating OHads which reacted with CO to form –COOH, resulting in CO2.

Role of cationic gold in supported CO oxidation catalysts

2007 ◽  
Vol 44 (1-2) ◽  
pp. 103-114 ◽  
Author(s):  
Juan C. Fierro-Gonzalez ◽  
Javier Guzman ◽  
Bruce C. Gates
Keyword(s):  
Co Oxidation ◽  
Oxidation Catalysts ◽  
Cationic Gold
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