低碳烃中微量的甲醇等含氧化合物会对其后续应用和装置运行造成不利影响。以含有1.2 wt%甲醇的正己烷为模型底物,利用甲醇独特的反应性能和甲醇与正己烷的极性差异,分别考察氯化钙、磺化树脂、大孔氧化硅和4A分子筛等吸附剂的甲醇脱除性能。实验结果表明,磺化树脂具有良好的甲醇脱除性能和再生重复性。在甲醇去除率≥90%的条件下,磺化树脂对甲醇的有效吸附量为0.41 g/g,磺化树脂经过再生后吸附甲醇性能与新鲜树脂相比基本不变,可重复利用,具有良好的实用性。

Trace oxygen-containing compounds such as methanol in light alkanes may cause unfavorable impact on the subsequent applications of light alkanes and the operation of industrial plants.Herein,n-hexane containing 1.2 wt.% methanol is used as model substrate to study the adsorption properties of methanol over CaCl₂,sulfonated resin,microporous SiO₂ and 4A zeolite,respectively by utilizing the unique reactivity of methanol and the polarity difference between methanol and n-hexane.Experimental results show that sulfonated resin represents high performance in removing methanol and good regeneration performance.Under the condition that methanol removal is higher than 90%,the adsorption capacity of methanol over sulfonated resin is 0.41 g·g^-1.There is little change between regenerated sulfonated resin and fresh one,indicating reusability and good application prospect.

姜玉坤(1997-),男,硕士生,研究方向为炭基新材料,jiangyukun@dicp.ac.cn;孙承林(1963-),男,硕士,研究员,研究方向为工业废水处理及工业催化,通讯联系人,clsun@dicp.ac.cn。