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Structural evolution of sol-gel derived nanostructured alumina granules with calcination temperature

Authors
Choi, JunseoKim, BumsangKim, Jinsoo
Issue Date
Sep-2006
Publisher
SOC CHEMICAL ENG JAPAN
Keywords
alumina; granulation; sol-gel; pore structure; nanostructure
Citation
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, v.39, no.9, pp.1000 - 1003
Journal Title
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Volume
39
Number
9
Start Page
1000
End Page
1003
URI
https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/24513
DOI
10.1252/jcej.39.1000
ISSN
0021-9592
Abstract
Stable 2 M [mol/L] boehmite so] was prepared by modifying the Yoldas process, followed by a granulation process in which paraffin oil and ammonia solution were used as the media to facilitate shape forming and consolidation of the gel structure, respectively. The product granules were always spherical with large surface area and narrow pore size distribution. A systematic investigation of the effect of calcination temperature on the pore structures of the granules was carried out. When the calcination temperature was increased, the product granules exhibited larger pore size with reduced porosity. The pore structure can be precisely controlled by the calcination temperature.
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