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文章合成出了一种新型硅镁胶(MgO·2.4SiO2)吸附材料并对其进行了比表面积和孔径分析,其比表面积和平均孔径分别为708.21 m2/g和7.59 nm。吸附实验结果表明:此种硅镁胶对亚甲基蓝有很强的吸附能力,25℃时,最大吸附量可达1 044.68 mg/g,远大于其他吸附剂对亚甲基蓝的吸附量。吸附过程符合Langmuir等温吸附方程和伪二级动力学方程。
A new type of MgO · 2.4SiO2 adsorbent was synthesized and its specific surface area and pore size were analyzed. The specific surface area and average pore diameter were 708.21 m2 / g and 7.59 nm, respectively. The results of adsorption experiments show that the magnesium silicate has strong adsorption capacity for methylene blue. The maximum adsorption capacity at 1 044.68 mg / g at 25 ℃ is much larger than that of other adsorbents. The adsorption process accords with Langmuir isotherm adsorption equation and pseudo-second-order kinetic equation.