Synthesis of large-mesoporous γ-Al2O3 from coal-series kaolin at room temperature

Large-mesoporous Al2O3 has been successfully synthesized from calcined coal-series kaolin by using cetyltrimethylammonium bromide(CTAB) as template at room temperature. After calcined at 700°C, the as-synthesized samples have transformed to mesoporous γ-Al2O3. The mesoporous γ-Al2O3 has a specific a...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2013-01, Vol.91 (15), p.136-138
Main Authors: Pan, Feng, Lu, Xuchen, Wang, Tizhuang, Wang, Yun, Zhang, Zhimin, Yan, Yan, Yang, Suping
Format: Article
Language:English
Subjects:
aluminum oxide
CTAB
Kaolin
Large-mesoporous γ-Al2O3
Oxidation
Porous materials
Room temperature
temperature
transmission electron microscopy
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!
Description
Summary:Large-mesoporous Al2O3 has been successfully synthesized from calcined coal-series kaolin by using cetyltrimethylammonium bromide(CTAB) as template at room temperature. After calcined at 700°C, the as-synthesized samples have transformed to mesoporous γ-Al2O3. The mesoporous γ-Al2O3 has a specific area of 253.4m2g−1, large pore volume of 1.487cm3g−1, and an average pore diameter of 12.9nm. TEM images show that the calcined mesoporous alumina has wormhole-like pores without long-range ordered framework. A probable formation mechanism of large-mesoporous γ-Al2O3 is also proposed. ► Leachate of coal-series kaolin as Al resource. ► Large-mesoporous γ-Al2O3 have been synthesized at room temperature. ► γ-Al2O3 have surface area of 357.7m2g−1 and pore volume of 1.744cm3g−1.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2012.09.052