研究了涂铁多孔陶瓷(IOCPC)在20～40℃下对亚甲基蓝(MB)静态吸附的热动力学性质.用液相沉积、多次涂层法对赤泥质多孔陶瓷表面改性制备吸附剂,并通过小试摇床实验考察了IOCPC在不同条件下吸附MB的效果.结果表明:IOCPC的比表面积为4.987m2/g,比改性前增大3.28倍,平均孔径为11.36nm.IOCPC对MB的吸附等温线呈S型,Freundlich等温吸附方程和准二级动力学方程较好地描述了IOCPC对MB的吸附等温线及吸附动力学实验结果,相关系数分别＞0.89和0.97,平衡吸附容量随温度的升高而增加.由标准吉布斯自由能变(莫獹＜0 )、标准反应焓变(莫獺0＞0)和吸附活化能(Ea=16.145kJ/mol＞4.184kJ/mol)的值可判断,IOCPC对MB的吸附是自发的、吸热的化学吸附反应.
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