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Role of ethanol in sodalite crystallization in an ethanol–Na2O–Al2O3–SiO2–H2O systemElectronic supplementary information (ESI) available. See DOI: 10.1039/c1ce05194f.
- Source :
-
CrystEngComm . Jun2011, Vol. 13 Issue 14, p4714-4722. 9p. - Publication Year :
- 2011
-
Abstract
- Crystallization of sodalite was studied in an ethanol–Na2O–Al2O3–SiO2–H2O system. The addition of ethanol was observed to significantly affect the crystallization process and final crystal sizes and morphologies. Micron-sized sodalite particles with disc and thread-ball-like shapes were produced at low ethanol contents whereas sodalite particles with core-shell nanostructures were dominant at high ethanol contents. Prolongation of the reaction time led to hollow architectures with polycrystalline shells. This study showed that the formation of core-shell and hollow sodalite structures followed a surface crystallization process, including the following steps: the formation of amorphous spherical aggregates, multiple nucleation on the surface, growth of shell nanocrystals, and amorphous core digestion. The present work provides new insights into a better understanding of the role of ethanol in zeolite crystallization, and controllable synthesis of sodalite crystals with different morphologies. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 13
- Issue :
- 14
- Database :
- Academic Search Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 63249035
- Full Text :
- https://doi.org/10.1039/c1ce05194f