Synthesis of ultrafine ceria powders by mechanochemical processing
Data(s) |
01/07/2001
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Resumo |
The synthesis of ultrafine cerium dioxide (CeO<sub>2</sub>) powders via mechanochemical reaction and subsequent calcination was studied. Anhydrous CeCl<sub>3</sub> and NaOH powders, along with NaCl diluent, were mechanically milled. A solid-state displacement reaction—CeCl<sub>3</sub>+ 3NaOH → Ce(OH)<sub>3</sub>+ 3NaCl—was induced during milling in a steady-state manner. Calcination of the as-milled powder in air at 500°C resulted in the formation of CeO<sub>2</sub> nanoparticles in the NaCl matrix. A simple washing process to remove the NaCl yielded CeO<sub>2 </sub>particles ∼10 nm in size. The particle size was controlled in the range of ∼10–500 nm by changing the calcination temperature.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Wiley-Blackwell Publishing |
Relação |
http://dro.deakin.edu.au/eserv/DU:30022552/tsuzuki-syntheisofultrafine-2001.pdf http://dx.doi.org/10.1111/j.1151-2916.2001.tb00859.x |
Palavras-Chave | #cerium/cerium compounds #synthesis #powders |
Tipo |
Journal Article |