LIQUID-PHASE ADSORPTION KINETICS OF ISOMALTOTRIOSE ON Ca^(2+) EXCHANGE RESIN

查看全文 作　　者：LI Xiang GUO [1]Haifu 机构地区：[1]Chemistry Department of Zhaoqing University, Zhaoqing 526061, China 出　　处：《Chinese Journal of Reactive Polymers》索引2006年第15卷第2期,共7页 基　　金：Natural Science Foundation of Guangdong Province (5300563) 摘　　要：The adsorption of isomaltotriose from aqueous solution on Ca2+ resin was investigated. The adsorption isotherm and the rate curve were determined. The pseudo-first-order model, pseudo-second-order model and the intraparticle diffusion model were used to predict the rate constants of adsorption. The activation energy of adsorption has been also evaluated using the pseudo-second-order rate constants. The results showed that the adsorption of isomaltotriose onto Ca2+ resin is an exothermically activated process. The adsorption isotherm can be described by Langmuir equation. The pseudo-second-order model can fit well to the adsorption rate curve of isomaltotriose onto Ca2+ resin. It suggests that the adsorption of isomaltotriose onto Ca2+ resin involve chemical adsorption. 关 键 词：物理化学 表面现象 吸附 运动机理