硅烷试剂改性活性炭的制备及对苯胺的吸附性能研究

Preparation of Silylated Activated Carbon and Its Adsorption Performance of Aniline

利用3-(甲基丙烯酰氧)丙基三甲氧基硅烷(MPTMS)对多孔活性炭进行表面改性。利用物理吸附仪对吸附剂进行表征,研究了改性活性炭对水中苯胺的吸附性能。结果表明,改性后活性炭对水中苯胺的吸附容量显著提高,与改性前相比,吸附容量提高了1.6倍,对苯胺的吸附符合Freundlich模型,改性后活性炭1/n=0.4886,使吸附趋于容易进行。

Activated carbon was modified with 3-（Methacryloyloxy）- propyltrimethoxysilane （MPTMS）. The obtained material was characterized By BET. Moreover, the characteristics and sorption mechanism of the new material was explored. The results show that the sorption capacity of the modified activated carbon increased by 160 %, compared with activated carbon. The modified activated carbon adsorption conforms to Freundlich isothermal adsorption equation. 1/n of the modified activated carbon is 0.4886, which indicate that adsorption is easier than before.