Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2011 | Volume: 11 | Issue: 20 | Page No.: 3510-3514
DOI: 10.3923/jas.2011.3510.3514
Instability of SBA-15 to Strong Base: Effects of LiOH Impregnation on its Surface Characteristics and Mesoporous Structure
Muhammad Ayoub and Ahmad Zuhairi Abdullah

Abstract:
Effects of strong base impregnation on surface characteristics of SBA-15 were investigated. LiOH (5-20 w/w %) was impregnated on SBA-15 with the objective of increasing the basicity of the material. The structure, surface area and basicity of the prepared materials were studied using Scanning Electron Microscope (SEM), Energy-Dispersive X-ray spectroscope (EDX), Transmission Electron Microscope (TEM), small-angle X-ray diffractometer and surface analyzer. Basicity increased with increasing LiOH loading but significant structural collapse was observed. About 20%w/w LiOH loading totally destroyed the porous structure of SBA-15 due to alkali-silica reaction. A new fluffy type with sharp edge structure resulted. Thus, SBA-15 showed poor resistance against LiOH and converted into a completely new structure.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Muhammad Ayoub and Ahmad Zuhairi Abdullah, 2011. Instability of SBA-15 to Strong Base: Effects of LiOH Impregnation on its Surface Characteristics and Mesoporous Structure. Journal of Applied Sciences, 11: 3510-3514.

DOI: 10.3923/jas.2011.3510.3514

URL: https://scialert.net/abstract/?doi=jas.2011.3510.3514

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

       

       

Curve Bottom