Elaboration of boehmite nano-powders by spray-pyrolysis
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
05/03/2009
|
| Resumo |
Boehmite (gamma-AlOOH) synthesis have been investigated using a spray pyrolysis (SP) device starting from a stable sol of Al-tri-sec-butoxide peptized by nitric acid. Free spherical particles from 100 to 500 nm have been elaborated. Particles sub-structure is made of nano-crystalline boehmite with very small average crystallite size (one crystal cell along the b axis). The nano-crystalline boehmite synthesized by SP at low temperature (200 degrees C) is spontaneously dispersible in water without any surface treatment. Boehmite powder may be transformed to transition gamma-alumina by heat post-treatment. Powders of sub-micrometric and spherical gamma-alumina particles may also be synthesized by SP at 700 degrees C. (C) 2008 Elsevier B.V. All rights reserved. |
| Formato |
95-98 |
| Identificador |
http://dx.doi.org/10.1016/j.powtec.2008.04.054 Powder Technology. Lausanne: Elsevier B.V. Sa, v. 190, n. 1-2, p. 95-98, 2009. 0032-5910 http://hdl.handle.net/11449/39757 10.1016/j.powtec.2008.04.054 WOS:000264432900019 |
| Idioma(s) |
eng |
| Publicador |
Elsevier B.V. Sa |
| Relação |
Powder Technology |
| Direitos |
closedAccess |
| Palavras-Chave | #Spray-pyrolysis #Nano-powders #Boehmite #Alumina #Sol-gel |
| Tipo |
info:eu-repo/semantics/article |
