Effect of reaction mixture composition and silica source on size distribution of zeolite X crystals

Publication date: 1 February 2015
Source:Journal of Crystal Growth, Volume 411
Author(s): Rumeysa Tekin , Nurcan Bac , Juliusz Warzywoda , Albert Sacco Jr
Zeolite X crystals were synthesized by hydrothermal crystallization from gels with different compositions. The syntheses were performed at 95°C using different silica sources such as sodium metasilicate anhydrous, sodium metasilicate pentahydrate, silicate solution and Cab-O-Sil. Triethanolamine was used in some syntheses in order to grow large crystals. Zeolite X crystals with diameters in the range of 1–220μm were obtained, and Cab-O-Sil in concert with triethanolamine yielded the largest crystals.