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采用有序介孔硅为硬模板制备了具有不同孔径的有序介孔炭(OMCs).氮气吸附测试表明,有序介孔炭具有丰富的介孔表面和集中的介孔分布.以壬基酚聚氧乙烯醚(NPE)为探针分子,研究了大分子酚类在有序介孔炭上的吸附行为.吸附研究表明,NPE在有序介孔炭上的吸附满足Langmuir吸附模型.孔结构分析表明,大于1.5nm的孔的表面积是决定NPE吸附量的关键因素,而有序介孔炭的最可几孔径决定吸附速率的大小.与吸附量相比,吸附速率更容易受环境温度的影响.动力学研究表明,NPE在有序介孔炭上的吸附满足准二级动力学方程.
The ordered mesoporous carbons (OMCs) with different pore sizes were prepared by using ordered mesoporous silicon as hard template.The nitrogen adsorption test showed that the ordered mesoporous carbon has rich mesoporous surface and concentrated mesoporous distribution.The nonyl Phenolic polyoxyethylene ether (NPE) was used as probe molecule to study the adsorption behavior of macromolecular phenols on ordered mesoporous carbons. The adsorption studies showed that NPE adsorption on ordered mesoporous carbon satisfied the Langmuir adsorption model. Structural analysis shows that the surface area of pores larger than 1.5nm is the key factor to determine the NPE adsorption capacity, while the most probable pore size of ordered mesoporous carbon determines the adsorption rate. Compared with the adsorption capacity, the adsorption rate is more easily affected by the ambient temperature Kinetic studies show that NPE adsorption on ordered mesoporous carbons satisfies quasi-second order kinetic equation.