%0 Journal Article
%T Cooperative Structure-Directing Effects in the Synthesis of a High-Silica Zeolite Mazzite Analogue
%A Qi Shi
%A Jinyang Yu
%A Zhengwei Song
%A Xiaozhen Kang
%J Materials Sciences and Applications
%P 306-309
%@ 2153-1188
%D 2012
%I Scientific Research Publishing
%R 10.4236/msa.2012.35045
%X A zeolite Mazzite (MAZ) analogue with high silica content has been synthesized from a Na<sub>2</sub>O-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub>-morpholine-H<sub>2</sub>O system. The crystal morphology of this MAZ analogue was found to consist of spherical agglomerates of diameter up to 17 ¦̀m. It has been unequivocally demonstrated that zeolite Mordenite (MOR) or amorphous material was produced instead in the absence of either morpholine or Na<sup>+</sup>. Associated phases indicate that the MAZ may be a ¡°intermediate phase¡± between the crystallization fields of zeolites Analcime (ANA) and MOR. Thus, the zeolite MAZ analogue is seemingly derived from the cooperative structure-directing effect of the organic molecule morpholine and the inorganic cation Na<sup>+</sup>. The results of CHN elemental analyses as well as of thermogravimetric (TG) analyses confirmed that morpholine had been incorporated into the zeolitic structure.
%K Crystal Growth
%K Sol-Gel Preparation
%K Characterization Methods
%K Mazzite Analogue
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=19204