Startseite Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition
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Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition

  • Seyed H. Tohidi , Garnik L. Grigoryan und Maryam Derhambakhsh
Veröffentlicht/Copyright: 11. Juni 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 103 Heft 8

Abstract

A distinct concentration of copper was embedded into silica matrix to form xerogel using Cu(NO3)2 · 3H2O as the copper source. The xerogel samples were prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) by the sol–gel method. The new molar ratio of H2O/TEOS was determined to be 11.67. Also the necessary amount of trihydrated copper nitrate was added into the solution such that the concentration of the copper oxide in the final solution reached 10 wt.%. After ambient drying, the xerogel samples were heated to 100, 400, 600, 800, and 1000°C at a slow heating rate (50 K h−1). The structural properties were characterized by means of transmission electron microscopy, surface analysis and thermal program reduction methods at different temperatures. Finally, the catalytic behavior of nanocomposites was studied for nitrogen oxide (NO) oxidation and di-nitrogen oxide (N2O) decomposition reactions. The results present a systematic reactivity study of NO oxidation and N2O decomposition on the dispersed copper oxide nanocatalysts over silica supports in order to determine the ability of these materials to convert nitrogen oxide and di-nitrogen oxide into harmless species at different temperatures.

Keywords: Copper oxide; Catalytic behavior; Nanocomposite; NO; N2O
1 Correspondence address: Seyed Hossein Tohidi, Materials Research School, NSTIP.O. Box: 31485-498, Karaj, Iran, Tel.: +98 261 4411100, Fax: +98 261 4464056, E-mail:

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Received: 2010-12-13
Accepted: 2012-1-19
Published Online: 2013-06-11
Published in Print: 2012-08-01

© 2012, Carl Hanser Verlag, Munich

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR and other changes
  5. ECAA 2011
  6. Proceeding Papers
  7. A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: a comparison with experimental data
  8. Effect of room temperature storage time on precipitation in Al–Mg–Si(–Cu) alloys with different Mg/Si ratios
  9. Influence of Mg/Si ratio on the clustering kinetics in Al–Mg–Si alloys
  10. Effect of simultaneous deformation and artificial ageing on the mechanical properties of an Al–Mg–Si alloy
  11. Ab-initio modeling of metastable precipitation processes in aluminum 7xxx alloys
  12. The kinetics of clustering in Al–Mg–Si alloys studied by Monte Carlo simulation
  13. Regular Articles
  14. A physically based approach to model the incomplete bainitic transformation in high-Si steels
  15. Impact of interannealing on recrystallization during final annealing in twin-belt cast Al–Fe–Si sheet
  16. Direct preparation of ferrite magnetic material from Jinchuan nickel sulfide concentrate by acid leaching
  17. Effect of La3+ on microwave dielectric properties of (Pb1−xCax)(Fe0.5Nb0.5)O3 (x = 0.5–0.6) ceramics
  18. Thermodynamic properties of liquid copper–antimony–tin alloys determined from e.m.f. measurements
  19. Modelling of metal nano-particle condensation and growth in a reactive atmosphere
  20. Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition
  21. Manufacturing process and electrochemical properties of an Mg–Ga–Hg anode sheet
  22. Effect of strain rate and dynamic strain ageing on work-hardening for aluminium alloy AA5182-O
  23. Steady-state creep analysis of a functionally graded thick cylinder subjected to internal pressure and thermal gradient
  24. Residual stress relaxation of hydroxyapatite/316L asymmetrical functionally gradient material fabricated by hot-pressing
  25. Strength and water permeability of concrete containing various types of fly ashes and filler material
  26. Comment to the paper “Re-evaluation of activities of magnesium and zinc components in the magnesium–zinc binary system from very low to high temperature”
  27. DGM News
  28. DGM News
https://doi.org/10.3139/146.110743
Schlagwörter für diesen Artikel
Copper oxide; Catalytic behavior; Nanocomposite; NO; N2O

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. A new editor for IJMR and other changes
  5. ECAA 2011
  6. Proceeding Papers
  7. A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: a comparison with experimental data
  8. Effect of room temperature storage time on precipitation in Al–Mg–Si(–Cu) alloys with different Mg/Si ratios
  9. Influence of Mg/Si ratio on the clustering kinetics in Al–Mg–Si alloys
  10. Effect of simultaneous deformation and artificial ageing on the mechanical properties of an Al–Mg–Si alloy
  11. Ab-initio modeling of metastable precipitation processes in aluminum 7xxx alloys
  12. The kinetics of clustering in Al–Mg–Si alloys studied by Monte Carlo simulation
  13. Regular Articles
  14. A physically based approach to model the incomplete bainitic transformation in high-Si steels
  15. Impact of interannealing on recrystallization during final annealing in twin-belt cast Al–Fe–Si sheet
  16. Direct preparation of ferrite magnetic material from Jinchuan nickel sulfide concentrate by acid leaching
  17. Effect of La3+ on microwave dielectric properties of (Pb1−xCax)(Fe0.5Nb0.5)O3 (x = 0.5–0.6) ceramics
  18. Thermodynamic properties of liquid copper–antimony–tin alloys determined from e.m.f. measurements
  19. Modelling of metal nano-particle condensation and growth in a reactive atmosphere
  20. Characterization and catalytic behavior of CuO@SiO2 nanocomposites towards NO oxidation and N2O decomposition
  21. Manufacturing process and electrochemical properties of an Mg–Ga–Hg anode sheet
  22. Effect of strain rate and dynamic strain ageing on work-hardening for aluminium alloy AA5182-O
  23. Steady-state creep analysis of a functionally graded thick cylinder subjected to internal pressure and thermal gradient
  24. Residual stress relaxation of hydroxyapatite/316L asymmetrical functionally gradient material fabricated by hot-pressing
  25. Strength and water permeability of concrete containing various types of fly ashes and filler material
  26. Comment to the paper “Re-evaluation of activities of magnesium and zinc components in the magnesium–zinc binary system from very low to high temperature”
  27. DGM News
  28. DGM News
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