作　　者： ; ; ; ; ;

机构地区： 广西师范大学化学化工学院

出　　处： 《化学研究》 2006年第2期60-64,共5页

摘　　要： 用D301树脂对活性深蓝K-R的吸附特征进行了研究.在所研究的温度和浓度范围内,用Freund lich方程能够很好地对吸附等温线进行拟合,吸附是吸热的优惠吸附过程.吸附焓、吸附自由能、吸附熵变的计算结果显示:△H>0,表明吸附是吸热过程;△G<0,表明吸附的自发性;△S>0,表明固/液界面上分子运动更为混乱.动力学研究表明,吸附过程受颗粒内扩散及其它扩散过程的共同控制. The adsorption property of reactive deep blue K-R on D301 resin is studied. A well fitted Freundlich equation is obtained for the adsorption isotherm within the observed temperature and concentration range, which indicates an endothermic and a favorable adsorption. The results of the enthalpy of adsorption, free energy, and entropy of adsorption indicate that. the positive value of △H shows an endothermic process, and the negative value of △ G shows the spontaneous nature of the adsorption process, and the positive value of △S indicates the increased randomness at the solid/solution interface during the adsorption process. The kinetic study shows that the adsorption process is under the control of intra-particle diffusion and other diffusions simultaneously.

关 键 词： 吸附 活性深蓝 树脂 吸附热力学 吸附动力学

领　　域： [理学] [理学]