Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
76738 | Microporous and Mesoporous Materials | 2006 | 6 Pages |
Abstract
Dynamic adsorption of an organic dye, methylene blue, on mesoporous silica materials with different structures, MCM-41, MCM-48 and MCM-50, were investigated and it was found that dye adsorption presents reversible or irreversible behaviour in dye solution depending on the structure of mesoporous materials. MCM-41 and MCM-48 display a reversible adsorption after reaching equilibrium while MCM-50 exhibits irreversible adsorption. The kinetic studies show that the adsorption of dye on MCM-41, MCM-48 and MCM-50 mesoporous materials follows the second-order kinetics. The desorption of dye from MCM-41 and MCM-48 follows the pseudo-first-order kinetics and the desorption rate constants are much smaller than those of adsorption.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Shaobin Wang, Huiting Li,