Size-controlled synthesis of ZrO{sub 2}-TiO{sub 2} nanoparticles prepared via reverse micelle method
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156 (Iran, Islamic Republic of)
Zirconium-titanium mixed oxide nanoparticles have been synthesized using microreactors made of bis-(2-ethylhexyl) sulfosuccinate (AOT)/water/n-hexane microemulsions. The control of particle size was achieved by varying the process variables, such as water-to-surfactant molar ratio and reagent concentration. Their sizes, appearances, crystal structures, pore diameter and surface area were characterized by TEM, XRD, N{sub 2} adsorption/desorption methods. The results revealed that samples prepared in reverse micelles had no crystalline phase. The Beckmann rearrangement of cyclohexanone oxime on ZrO{sub 2}-TiO{sub 2} nanoparticles was carried out in a fixed-bed down flow reactor to investigate the effect of particle size on catalytic activity and selectivity. Samples synthesized in reverse micelles had better reaction performance than samples prepared via sol-gel method. A parallel relationship could be drawn between the catalytic activity and the particle size as well as the selectivity of the catalyst.
- OSTI ID:
- 21144002
- Journal Information:
- Materials Research Bulletin, Vol. 43, Issue 5; Other Information: DOI: 10.1016/j.materresbull.2007.05.022; PII: S0025-5408(07)00209-7; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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