| Autor: |
Yao, Qing Xu, Jia, Ming Chun, Men, Jin Feng |
| Zdroj: |
Applied Mechanics and Materials; May 2012, Vol. 178 Issue: 1 p586-590, 5p |
| Abstrakt: |
Bi-functional mesoporsous silica adsorbents, functionalized via the introduction of chelating agents (mercaptopropyl and aminopropyl groups) were prepared to adsorb Co2+ and Mn2+ in dilute solutions. The molar ratio of MPTMS/APTMS in grafting process seemed to have great effected on the mesostructure of adsorbents, and the appropriate value was considered to be 2/1. The modified silica gels at that ratio showed well-ordered property as well as its high infinity of the two metal ions. The pseudo-second-order equation was applied to describe the adsorption kinetics. And the influence of interferential ions Ca2+ and Mg2+ was also studied. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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