托贝莫莱石晶须的螯合剂法水热合成

HYDROTHERMAL SYNTHESIS OF TOBERMORITE FIBERS THROUGH CALCIUM CHELATED COMPLEX

本文利用含Ca2 + 和SiO3 2 -的溶液并且以EDTA(乙二胺四乙酸二钠 )为螯合剂 ,通过在普通高压釜中 2 0 0℃ ,5小时水热反应 ,首次制备了直径和长度分别为 0 .1-1μm和 40 -60 μm的托贝莫莱石晶须。

A novel method for synthesizing tobermorite fibers has been developed.Tobermorite fibers can be synthesized successfully by the hydrothermal reaction at 200℃ for 5 hours using a Ca (Ⅱ)-EDTA complex precursor.Tobermorite fibers obtained in the present work were 40-60μm in length and 0.1-1μm in diameter.The properties of tobermorite fibers were characterized by XRD,SEM techniques.And the formation mechanism was proposed.