期刊
CLAY MINERALS
卷 53, 期 4, 页码 657-663出版社
MINERALOGICAL SOC
DOI: 10.1180/clm.2018.49
关键词
kaolin; metakaolin; calcination; alkali activation; geopolymer; self-supported membrane; zeolite A
资金
- National Science Centre in Poland [2015/17/B/ST8/01200]
The aim of this research was to determine the temperature of kaolin calcination in order to obtain an intermediate product (metakaolin) for the synthesis of geopolymers with potential application as self-supporting zeolitic membranes. The products obtained were analysed with X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The structural analysis of the metakaolins obtained suggested that the optimal temperature for the proposed application is 700 degrees C. After alkali activation of metakaolin, it is possible to obtain zeolite A and hydroxysodalite. The factors analysed, determining the type and quantity of crystalline phases, were activation temperature and concentration of sodium hydroxide solution (activator). The largest amounts of zeolites were obtained by alkali activation with 9 mol/dm(3) NaOH solution at 70 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据