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| Thesis Name： |
Evaluation of adsorptive properties of mesoporous materials by sorption fibers |
| Usage： |
chemistry |
| Keyword： |
Adsorption; mesoporous silica; sorption fibers; aromatic compounds |
| Remarks： |
Du Xinzhen1,2, Tao Xiaojuan, Wang Yarong1, Ding Ning1, Chen Hui1
(1 Department of Chemistry, Northwest Normal University, Lanzhou 730070; 2 The Key Laboratory of Polymer Materials of Gansu Province, Lanzhou 730070, China)
Received Mar.10, 2006;Supported by the National Natural Science Foundation of China (No: 20575053), the Natural Science Foundation of Gansu Province (3ZS051-A25-011-022) and the Key Laboratory of Polymer Materials of Gansu Province.
Abstract:
Mesoporous silica and composite were used as fiber coatings to evaluate their adsorptive properties. A diffusion-controlled process was involved for the adsorption of toluene, p-xylene, biphenyl and anthracene onto mesoporous materials in water matrix. Vigorous stirring and heating of the solution are favorable for the diffusion of the studied compounds. The fiber coated with phenyl-MCM-41 shows high adsorption efficiency and good molecular recognition but negative effect of salt on adsorption of target compounds. Rapid desorption could be obtained in aqueous solution containing methanol. The fiber is easy to prepare and handle. Moreover, only a small quantity of adsorption material was needed to prepare the sorption fibers compared with conventional batch sorption experiments. The fibers are inexpensive, durable and easy to couple with HPLC. Quantitative adsorption and desorption was obtained with good reproducibility. The coated fibers offer an alternative way to evaluate the adsorption behavior of potential adsorption or separation materials. |
| Original file： |
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