Jinxiang Dong, Hong Xu, Gaoyong Zhang, Jinping Li, Genwang Lian
May 8, 2013
In this paper, δ layered sodium disilicate with high framework stability has been synthesized by adding the salts of divalent and trivalent elements. In these salts AlCl 3 had the best effect for leaving the phase transformation of δ-Na 2 Si 2 O 5 . XRD, SEM, Ca 2+ ion binding capacity and clean experiment were used for measuring their properties. The data proved that Al-δ-Na 2 Si 2 O 5 had good framework stability. δ phase was still major phase after Al-δ-Na 2 Si 2 O 5 was treated in hot water (80°C) for 60 minutes. And Ca 2+ ion binding capacity may keep at 305 mg CaCO 3 /g through the treatment. The cleaning experiments showed that Al-δ-Na 2 Si 2 O 5 had good washing ability.