硅酸盐通报2013，Vol.32Issue(4)：589-596,8.
水溶液系中聚羧酸超塑化剂在C3AH6上的吸附过程研究
Adsorption Process of Polycarboxylate Superplasticizer onto C3AH6 in Aqueous Systems
摘要
Abstract
The adsorption of polycarboxylate superplasticizer (PCE) onto C3A hydration product was studied by UV spectrophotometer method. And, the influence factors such as initial adsorbate concentration, contact time,ambient temperature,suKate ions and so on. The pseudo-first-order, pseudo-second-order and intraparticle diffusion models were used to describe the kinetic data and the kinetic constants were also determined. The results show that the adsorption kinetics data fitted the pseudo-second-order model. The Langmuir, Freundlich and Temkin equations were applied to describe the equilibrium isotherm and the isotherm constants were also evaluated. The law of the adsorption of PCE on C3AH6 fits the Freundich isotherm equation. FTIR reflects that the adsorption of PCE onto C3AH6 was chemical adsorption.关键词
吸附/吸附动力学/等温吸附/聚羧酸超塑化剂/C3AH6Key words
adsorption/ kinetics/ isotherm/ polycarboxylate superplasticizers/ C3AH6分类
化学化工引用本文复制引用
赵芬娜,邓最亮,郑柏存,冯中军..水溶液系中聚羧酸超塑化剂在C3AH6上的吸附过程研究[J].硅酸盐通报,2013,32(4):589-596,8.基金项目
云南省科技厅省院省校重点项目(2009AD008)资助 （2009AD008）
