Li, Yong Xiu and Zhou, Xue Zhen and Wang, Yong and You, Xiao Zeng (2004) Preparation of nano-sized CeO2 by mechanochemical reaction of cerium carbonate with sodium hydroxide. Materials Letters, 58 (1-2). 245 - 249.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://www.sciencedirect.com/science/article/B6TX9...
Abstract
The preparation of nano-sized CeO2 powder by mechanochemical reaction of hydrate cerium carbonate with sodium hydroxide and subsequent heat treatment was studied using X-ray diffraction, differential thermal and thermo gravimetric analyses, and transmission electron microscopy. It was found that the mechanochemical reaction process can be divided into two steps: the first step is the multi-phases mechanochemical reaction of cerium carbonate with NaOH to form amorphous cerium hydroxide, the second step is the crystallization of Ce(OH)4 to form crystalline CeO2·2H2O under a quasi-hydrothermal synthesis condition caused by the mechanical ball-milling. The CeO2 powder obtained from as-milled Ce2(CO3)3·8H2O+NaOH following water washing and heat treatment at 800 °C appears clearly separated monodisperse nano-size particles: their crystal sizes are from 10 to 20 nm and the medium size aggregated particles is 0.21 μm.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nano-sized powder; Cerium oxide; Mechanochemical reaction; Ball milling |
| Subjects: | Material Science > Nanofabrication processes and tools Material Science > Nanochemistry Material Science > Nanostructured materials |
| ID Code: | 6895 |
| Deposited By: | SPI |
| Deposited On: | 24 Sep 2009 16:31 |
| Last Modified: | 24 Sep 2009 16:31 |
Repository Staff Only: item control page
