Studies of sol–gel TiO2 and Pt/TiO2 catalysts for NO reduction by CO in an oxygen-rich condition

2004 ◽  
Vol 230 (1-4) ◽  
pp. 94-105 ◽  
Author(s):  
J.A Wang ◽  
A Cuan ◽  
J Salmones ◽  
N Nava ◽  
S Castillo ◽  
...  
Keyword(s):  
No Reduction ◽  
Sol Gel ◽  
No Reduction By Co ◽  
Rich Condition ◽  
Catalysts For No Reduction

Influences of doping and thermal stability on the catalytic performance of CuO/Ce20M1Ox (M = Zr, Cr, Mn, Fe, Co, Sn) catalysts for NO reduction by CO

RSC Advances ◽  
2016 ◽  
Vol 6 (114) ◽  
pp. 113630-113647 ◽  
Author(s):  
Changshun Deng ◽  
Junning Qian ◽  
Chuxuan Yu ◽  
Yunan Yi ◽  
Pan Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
No Reduction ◽  
Metal Cations ◽  
Catalytic Performance ◽  
Variable Valence ◽  
No Reduction By Co ◽  
Catalysts For No Reduction

The doping of variable valence metal cations into CeO2 is beneficial for catalytic NO reduction by CO.

Pd-xMo/Al2O3 Catalysts for NO Reduction by CO

1999 ◽  
Vol 185 (1) ◽  
pp. 138-151 ◽  
Author(s):  
Martin Schmal ◽  
M.A.S. Baldanza ◽  
M.Albert Vannice
Keyword(s):  
No Reduction ◽  
No Reduction By Co ◽  
Catalysts For No Reduction

Characterization and catalytic performance of Cu/CeO2 and Cu/MgO-CeO2 catalysts for NO reduction by CO

2009 ◽  
Vol 363 (1-2) ◽  
pp. 208-215 ◽  
Author(s):  
Jinfa Chen ◽  
Junjiang Zhu ◽  
Yingying Zhan ◽  
Xingyi Lin ◽  
Guohui Cai ◽  
...  
Keyword(s):  
No Reduction ◽  
Catalytic Performance ◽  
No Reduction By Co ◽  
Catalysts For No Reduction

NO Reduction by CO Catalyzed with Au/TiO2 in Oxygen-rich Condition

2010 ◽  
Vol 1279 ◽  
Author(s):  
J. A. Wang ◽  
J. A. Toledo ◽  
C. Angeles ◽  
M. Moran-Pineda ◽  
A. García-Ruiz
Keyword(s):  
Reaction Temperature ◽  
Crystal Size ◽  
No Reduction ◽  
Rietveld Method ◽  
Anatase Phase ◽  
The Other ◽  
Similar Reaction ◽  
Average Crystal Size ◽  
No Reduction By Co ◽  
Rich Condition

AbstractGold nanoparticles supported on titania catalysts with different Au loadings were prepared and evaluated in the reaction of NO reduction by CO in an oxygen rich condition. The crystalline structures of the Au/TiO2 materials were refined with Rietveld method. TiO2 support chiefly contains anatase phase, having a crystalline size ranged from 5 to 15 nm. Au particles have an average crystal size approximately 2-5 nm as Au concentration less 3 wt %. In the reaction of NO + CO + O2, the Au/TiO2catalysts show a selectivity to 100 % N2, neither NO2 nor N2O was yielded in the reaction temperature between 25 and 400 °C, which strongly indicates that Au/TiO2catalysts are much superior to the other catalysts like Pt/TiO2 catalysts on which N2O was usually produced in the reaction temperature below 200 °C and NO2 was produced in the reaction temperature above 300 °C under a similar reaction condition.

NO reduction by CO over CuO supported on CeO2-doped TiO2: the effect of the amount of a few CeO2

2015 ◽  
Vol 17 (24) ◽  
pp. 16092-16109 ◽  
Author(s):  
Changshun Deng ◽  
Bin Li ◽  
Lihui Dong ◽  
Feiyue Zhang ◽  
Minguang Fan ◽  
...  
Keyword(s):  
No Reduction ◽  
Catalytic Properties ◽  
Model Reaction ◽  
Doped Tio2 ◽  
No Reduction By Co ◽  
Catalysts For No Reduction

This work is mainly focused on the investigation of the influence of the amount of a few CeO2 on the physicochemical and catalytic properties of CeO2-doped TiO2 catalysts for NO reduction by a CO model reaction.

Influence of different impregnation modes on the properties of CuO CeO 2 /γ-Al 2 O 3 catalysts for NO reduction by CO

2017 ◽  
Vol 426 ◽  
pp. 279-286 ◽  
Author(s):  
Jingfang Sun ◽  
Chengyan Ge ◽  
Xiaojiang Yao ◽  
Weixin Zou ◽  
Xi Hong ◽  
...  
Keyword(s):  
No Reduction ◽  
No Reduction By Co ◽  
Catalysts For No Reduction

scholarly journals Aluminum Doped Titania as a Support of Copper Catalysts for SCR of Nitrogen Oxides

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6021
Author(s):  
Wojciech Guziewicz ◽  
Anna Białas ◽  
Bogna D. Napruszewska ◽  
Małgorzata Zimowska ◽  
Jacek Gurgul
Keyword(s):  
No Reduction ◽  
Sol Gel ◽  
Catalytic Efficiency ◽  
Copper Catalysts ◽  
Maximum Activity ◽  
High Catalytic Activity ◽  
Temperature Window ◽  
Copper Aluminum ◽  
Doped Titania ◽  
Catalysts For No Reduction

Aluminum doped titania samples were synthesized as supports of copper oxide catalysts for NO reduction with ammonia. Samples were prepared by the sol-gel method with various ratios of aluminum to titanium. Their thermal stability was examined by TG/DSC methods which revealed that precursors were decomposed at 450 °C. The XRD measurements showed that aluminum caused the diminishing of titania crystallites and was built into the anatase structure or formed an amorphous phase. The admixture of aluminum in titania resulted in a significant increase in specific surface area of mesoporous supports as determined by low temperature sorption of nitrogen. Results of the catalytic tests over copper/aluminum-titania samples obtained by impregnation pointed out that the addition of aluminum broadened the temperature window of high catalytic activity. The increase in Al concentration shifted the temperature of maximum activity to higher values, and at the same time lowered nitrous oxide formation as well. Better catalytic efficiency could result from high copper dispersion on the catalysts surface, as well as the synergistic interaction between Ti and Cu causing reduction in CuO species as confirmed by XPS measurements. It was shown that copper was present as Cu+ species mainly, forming Cu-O-Ti bonds on the catalysts surface.

Design of co-symbiotic FexMnyO catalysts for NO reduction by CO

2020 ◽  
Vol 10 (23) ◽  
pp. 7894-7903
Author(s):  
Longqing Wei ◽  
Tangkang Liu ◽  
Yaohui Wu ◽  
Hao Liu ◽  
Lihui Dong ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
No Reduction ◽  
Thermal Method ◽  
Fe Doping ◽  
Doping Amount ◽  
No Reduction By Co ◽  
Fe Content ◽  
Catalysts For No Reduction

FexMnyO catalyst with different Fe content was prepared by ethylene glycol solvent-thermal method, and the CO-SCR activity of FexMnyO catalyst was tested to investigate the influence of Fe doping amount on the activity of manganese based catalyst.

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