取代基效应对三苯甲酸纤维素酯类吸附剂的吸附性能的影响  

Effect of Substituted Group Effects on Adsorption Capability of Adsorbents of Cellulose tris Benzoate Derivatives

作　　者：施介华[1] 刘清[2] 杨根生[1] 郑云峰[1] 

机构地区：[1]浙江工业大学药学院,杭州310032 [2]浙江大学分析测试中心,杭州310027

出　　处：《分析化学》2003年第3期336-340,共5页Chinese Journal of Analytical Chemistry

基　　金：浙江省教委基金 (No .2 0 0 0 0 2 0 0 );浙江省分析测试基金 (No .0 0 0 35 )资助项目

摘　　要：采用催化合成法制备三苯甲酸纤维素酯 (CTB)、三 (4 甲基苯甲酸 )纤维素酯 (CTMB)和三 (4 氯苯甲酸 )纤维素酯 (CTCB) ,将其分别负载于GasChromQ载体上 ,用不同类型的探针分子及气相色谱法表征其吸附性能 ,研究取代基团的电子效应和空间效应对其吸附性能的影响。实验结果表明 :在三苯甲酸纤维素酯类吸附剂和苯衍生物吸附质的苯环上的取代基效应 (电子效应和立体效应 )对吸附质在吸附剂上的吸附热(-ΔHa)的影响显著 。The cellulose tris benzoate (CTB), cellulose tris (4-methylbenzoate) ( CTMB) and cellulose tris (4-chlorobenzoate) (CTCB) have been synthesised by the catalytic method. The adsorption capability of Gas Chrom Q respectively coated with CTB, CTMB and CTCB was characterized by a variety of probe molecule and gas chromatography. The effect of substituted group effects on phenyl ring of adsorbents on adsorption capability of these adsorbents was investigated. The experimental results showed that the effect of the electric effects and steric effects of substituted groups on phenyl ring of these adsorbents and adsorbates of benzene derivatives on adsorption heat were remarkable. Moreover, both were different.

关 键 词：取代基效应 吸附剂 三苯甲酸纤维素酯 三(4-甲基苯甲酸)纤维素酯 三(4-氯苯甲酸)纤维素酯 吸附性能 

分 类 号：O647.3[理学—物理化学]