CO2 adsorption on amine functionalized MCM-41: Effect of bi-modal porous structure
CO2 adsorption on amine functionalized MCM-41: Effect of bi-modal porous structure
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DOI：
10.1016/j.jtice.2015.07.021
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发表时间：
2016-02
影响因子：
5.7
通讯作者：
M. Gholami;M. Talaie;S. Aghamiri
中科院分区：
文献类型：
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作者：
M. Gholami;M. Talaie;S. Aghamiri
本研究通过一系列的实验来寻找在双峰孔结构MCM-41（BPS-MCM-41）上接枝3-[2-（2-Aminoethylamino）ethylamino]propyltrimethoxysilane（以下简称TRI）的最佳条件。采用Taguchi L9正交设计（OA，三因素三水平）考察了温度、水/固载物比、TRI/固载物比对胺接枝BPS-MCM-41结构的接枝率和CO2吸附性能的影响。选择吸附CO2与消耗TRI的比值作为优化的目标函数。BPS-MCM-41的最佳条件为85 °C，水与载体之比为0.3cc/g，氨基硅烷与载体之比为1.5cc/g。在此条件下，BPS-MCM-41分子筛的胺接枝量为2.31mmol/g。方差分析（ANOVA）表明，TRI的用量对反应的影响最大，而反应温度的影响最小。
In this study, a series of experiments was carried out to find the optimum condition for grafting 3-[2-(2-Aminoethylamino)ethylamino]propyltrimethoxysilane (here after TRI) on bi-modal porous structure MCM-41 (here after BPS-MCM-41). The Taguchi experimental design L9orthogonal array (OA, three factors in three levels) was applied to investigate the effect of temperature, water to solid support ratio, and TRI to solid support ratio on the amine grafting and CO2adsorption performance of amine grafted BPS-MCM-41 structure. The ratio of adsorbed CO2to consumed TRI was selected as the objective function of optimization. The optimum conditions for the BPS-MCM-41 were 85 °C, the water to support ratio of 0.3 cc/g, and the aminosilane to support ratio of 1.5 cc/g. The amine grafting of BPS-MCM-41 in this condition resulted in 2.31 mmol/g adsorption capacity. The analysis of variance (ANOVA) showed that the most significant effect on the response was exerted by the amount of TRI used, while the reaction temperature was found to be the least influential.