Diverse Physical States of Amorphous Precursors in Zeolite Synthesis
| Autor: | Karena W. Chapman, Javier García Martínez, Aseem Chawla, Rui Li, James G. Sutjianto, Noemi Linares, Jeffrey D. Rimer |
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| Rok vydání: | 2018 |
| Předmět: |
Chemistry
General Chemical Engineering Nucleation 02 engineering and technology General Chemistry Microporous material 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Amorphous solid law.invention Chemical engineering Aluminosilicate law Crystallization 0210 nano-technology Zeolite Sol-gel |
| Zdroj: | Industrial & Engineering Chemistry Research. 57:8460-8471 |
| ISSN: | 1520-5045 0888-5885 |
| Popis: | The assembly and structural evolution of amorphous precursors during zeolite crystallization is an important area of interest owing to their putative roles in the nucleation and growth of aluminosilicate microporous materials. Precursors range in complexity from oligomeric molecules and colloidal particles to gels comprised of heterogeneous silica and alumina domains. The physical state of precursors in most zeolite syntheses is generally not well understood; however, it is evident that the physicochemical properties of precursors depend on a wide range of conditions that include (but are not limited to) the selection of reagents, the composition of growth mixtures, the methods of preparation, and the use of inorganic and/or organic structure-directing agents. The fact that precursors evolve in size, shape, and/or microstructure during the course of nucleation and potentially throughout crystallization leads to questions pertaining to their mode of action in the formation of zeolites. This also highlights... |
| Databáze: | OpenAIRE |
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