Loading…
High surface area α-alumina preparation by using urban waste
A new method for preparing high surface area α-alumina from urban waste is proposed. The method consists of the precipitation of a precursor that contains bohemite mixed with a linear polymer and subsequently the thermal decomposition of the precursor by heating in nitrogen and air to 1200 °C. The r...
Saved in:
Published in: | Ceramics international 2009-08, Vol.35 (6), p.2111-2117 |
---|---|
Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | A new method for preparing high surface area α-alumina from urban waste is proposed. The method consists of the precipitation of a precursor that contains bohemite mixed with a linear polymer and subsequently the thermal decomposition of the precursor by heating in nitrogen and air to 1200
°C. The resulting α-alumina consists of nanocrystals of about 100
nm aggregated into larger particles with relatively high surface area (12
m
2
g
−1) and a significant macropore volume of 0.545
cm
3
g. Methods of X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and selected area electron diffraction (SAED) were used to characterize microstructure of prepared materials. Results of differential thermal analysis, thermogravimetry and emanation thermal analysis characterized the thermal behaviour of α-alumina precursors. |
---|---|
ISSN: | 0272-8842 1873-3956 |
DOI: | 10.1016/j.ceramint.2008.11.011 |