酚类化合物在活性炭纤维上的竞争吸附

The Competitive Absorption of Phenol Compounds on Actived Carbon Fibre

文章探讨邻甲苯酚,对甲苯酚以及2,4-二甲基苯酚在活性炭纤维上的吸附行为,并应用理想吸附溶液理论(IAST)分别对其双组份体系和多组份体系的竞争吸附规律进行描述。结果表明,Freundlish公式能较好地描述酚类化合物在活性炭纤维上的吸附行为:当有机物的物理和化学性质相差不大时,其分子结构是影响其吸附行为的重要因素;IAST能较好地预测酚类化合物在活性炭纤维上的竞争吸附行为,但对于有氧条件下聚合作用较强的化合物如邻甲苯酚等,IAST的预测值和实测值之间存在着一定的偏差。

In the paper the absorption behaviour of o-methophenol,p - methophenol and 2,4- bimethophenol is discussed.Based on Ideal Absorption Solution Theory(IAST) the competitive absorption pattern(CAP) of double and multi-component systems is scanned.It can be seen that formula Frendlish can describes the absorption behaviour of phenol compounds on actived carbon fibre pretty well.If there is few difference appeared in physical and chemical property of organic material, molecular structure will be the important factor influencing absorption.IAST can predicate the CAP of phenol compounds on actived carbon fiber quite well,but for the high polymerisative compounds such as o-methophenol,some deviation is existed between IAST's predication and actual measurement.