摘要
本文采用BET法、染料吸附法、比活力法和滴定法研究了浙江、吉林硅藻土和浙江活化土的比表面随焙烧温度,浙江土的比表面随焙烧时间的变化规律。在所试条件下,我们发现浙江土的比表面随焙烧温度的升高而逐渐降低,而吉林土在400℃时有一最大值;浙江、吉林土的比表面随盐酸酸洗浓度的变化而发生改变。对应各实验的电镜图,讨论了硅藻土的比表面与其结构之间的关系,同时还分析了上述四种方法的测定结果产生差异的原因。
The rule of variation on the specific surface of Zhejiang, Jiling diatomite with roasted temperatures and roasted time has been studied by using BET, dye adsorption, spcific activation and titration methods. Under the experiment condition, we found that specific surface of roasted Zhejiang diatomite gradually decreased with rising temperatures; Jiling diatomite intially increased to maximum at 400℃. The spcific surface of acid treating Zhejiang Jiling diatomite varied with the concentration of hydrochloric acid. Corresponding to SEM photograph of each experiment, the relation between variation of specific surface of diatomite and its structure has been discussed; simultaneously the reasons for different results of above methods have also been analyzed.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1991年第4期706-714,共9页
Journal of Nanjing University（Natural Science）
关键词
硅藻土
比表面
diatomite, specific surface
