scholarly journals Total oxidation of propene at low temperature over Co3O4–CeO2 mixed oxides: Role of surface oxygen vacancies and bulk oxygen mobility in the catalytic activity

2008 ◽  
Vol 347 (1) ◽  
pp. 81-88 ◽  
Author(s):  
L.F. Liotta ◽  
M. Ousmane ◽  
G. Di Carlo ◽  
G. Pantaleo ◽  
G. Deganello ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Oxygen Vacancies ◽  
Mixed Oxides ◽  
Surface Oxygen ◽  
Oxygen Mobility ◽  
Total Oxidation ◽  
Bulk Oxygen

scholarly journals Insights into the promotion role of phosphorus doping on carbon as a metal-free catalyst for low-temperature selective catalytic reduction of NO with NH3

RSC Advances ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 12908-12919
Author(s):  
Weifeng Li ◽  
Shuangling Jin ◽  
Rui Zhang ◽  
Yabin Wei ◽  
Jiangcan Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Carbon Aerogels ◽  
Phosphorus Doping ◽  
Reduction Of No ◽  
Metal Free

P species can effectively enhance the catalytic activity of carbon aerogels for NO reduction at low temperature.

scholarly journals The prevalence of surface oxygen vacancies over the mobility of bulk oxygen in nanostructured ceria for the total toluene oxidation

2015 ◽  
Vol 174-175 ◽  
pp. 403-412 ◽  
Author(s):  
Jose Manuel López ◽  
Alexander L. Gilbank ◽  
Tomás García ◽  
Benjamín Solsona ◽  
Said Agouram ◽  
...  
Keyword(s):  
Oxygen Vacancies ◽  
Surface Oxygen ◽  
Toluene Oxidation ◽  
Nanostructured Ceria ◽  
Bulk Oxygen

scholarly journals Catalytic Combustion of Low Concentration Methane over Catalysts Prepared from Co/Mg-Mn Layered Double Hydroxides

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Hongfeng Liu ◽  
Xingrui Fu ◽  
Xiaole Weng ◽  
Yue Liu ◽  
Haiqiang Wang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Layered Double Hydroxides ◽  
Catalytic Combustion ◽  
Mixed Oxides ◽  
Oxygen Mobility ◽  
Catalytic Combustion Of Methane ◽  
Redox Ability ◽  
Double Hydroxides ◽  
Mn Oxides

A series of Co/Mg-Mn mixed oxides were synthesized through thermal decomposition of layered double hydroxides (LDHs) precursors. The resulted catalysts were then subjected for catalytic combustion of methane. Experimental results revealed that the Co4.5Mg1.5Mn2LDO catalyst possessed the best performance with theT90=485°C. After being analyzed via XRD, BET-BJH, SEM, H2-TPR, and XPS techniques, it was observed that the addition of cobalt had significantly improved the redox ability of the catalysts whilst certain amount of magnesium was essential to guarantee the catalytic activity. The presence of Mg was helpful to enhance the oxygen mobility and, meanwhile, improved the dispersion of Co and Mn oxides, preventing the surface area loss after calcination.

Structures and Catalytic Activities of LaSrCoO4 and LaSrCoO3.6F0.4 Mixed Oxides

2011 ◽  
Vol 55-57 ◽  
pp. 1957-1961
Author(s):  
Xiao Mao Yang
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Oxygen Vacancies ◽  
Mixed Oxides ◽  
Lattice Oxygen ◽  
Gel Method ◽  
Catalytic Activities ◽  
Surface Areas ◽  
Better Than

The perovskite-like LaSrCoO4and LaSrCoO3.6F0.4mixed oxides were prepared by the polyglycol gel method, investigated by using the XRD, TEM, BET, O2-TPD and XPS methods, and used successfully for CO and C3H8oxidization. The results indicate that LaSrCoO4and LaSrCoO3.6F0.4mixed oxides have K2NiF4structure. The catalytic activity of LaSrCoO4is better than that of LaSrCoO3.6F0.4, this is explained in terms of more mobile lattice oxygen, higher content of Co3+, more oxygen vacancies, smaller particle size and larger BET surface areas of LaSrCoO4.

Role of oxygen vacancies on the low-temperature dielectric relaxor behavior in epitaxial Ba0.85Ca0.15Ti0.9Zr0.1O3 thin films

2021 ◽  
Vol 5 (6) ◽  
Author(s):  
Subhashree Chatterjee ◽  
Abhisikta Barman ◽  
Shubhankar Barman ◽  
Tanmay Chabri ◽  
Sohini Kar-Narayan ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Oxygen Vacancies ◽  
Relaxor Behavior ◽  
Dielectric Relaxor
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