硅藻土的比表面及其脱色机理  

Specific Surface and Decoloring Mechanism of Diatomite

作　　者：孙国忠[1] 杨宇翔[1] 蒋忠良[1] 吴介达[1] 陈荣三[2] 

机构地区：[1]同济大学化学系,上海200092 [2]南京大学配位化学研究所,南京210093

出　　处：《玻璃与搪瓷》1999年第5期16-20,35,共6页Glass & Enamel

基　　金：国家自然科学基金

摘　　要：用ＢＥＴ法研究了浙江、吉林硅藻土及浙江活化土的比表面随焙烧温度的变化规律，并且采用染料吸附法研究了次甲基蓝在浙江和吉林硅藻土表面的吸附等温线，吸附方程符合Ｆｒｅｕｎｄｌｉｃｈ 方程：Γ＝ ＫＣ１ｎ ，硅藻土吸附性质与其表面ζ电位和ＩＥＰ值有关。The rule of variation on the specific surface of Zhejiang, Jilin diatomite with calcining temperature has been studied by using BET method. And adsorption isotherm of methylene blue on surface of Zhejiang and Jilin diatomite were also studied by using dye adsorption method.Adsorption equation was in conformity with Freundlich equation:Γ=KC 1/n , the adsorption properties of diatomites were relevant to their surface ζ potential and IEP va- lue.

关 键 词：硅藻土 比表面 脱色机理 染料吸附 油脂 

分 类 号：TQ644.464[化学工程—精细化工] O647.3[理学—物理化学]