Conversion of Fly Ash into Mesoporous Aluminosilicate

Mesoporous aluminosilicate in the hexagonal phase (MCM-41) has been synthesized from fused fly ash solutions and cationic cetyltrimethylammonium bromide (CTAB) surfactants. We provide direct evidence that an MCM-41 aluminosilicate with a homogeneous chemical composition of Si/Al = 13.4 can be prepar...

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Veröffentlicht in:	Industrial & engineering chemistry research 1999-03, Vol.38 (3), p.973-977
Hauptverfasser:	Chang, Hsiao-Lan, Chun, Chang-Min, Aksay, Ilhan A, Shih, Wei-Heng
Format:	Artikel
Sprache:	eng
Schlagworte:	01 COAL, LIGNITE, AND PEAT ALUMINIUM SILICATES CHEMICAL PREPARATION Chemistry Colloidal state and disperse state ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION Exact sciences and technology FLY ASH General and physical chemistry MOLECULAR SIEVES Porous materials WASTE PRODUCT UTILIZATION
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Zusammenfassung:	Mesoporous aluminosilicate in the hexagonal phase (MCM-41) has been synthesized from fused fly ash solutions and cationic cetyltrimethylammonium bromide (CTAB) surfactants. We provide direct evidence that an MCM-41 aluminosilicate with a homogeneous chemical composition of Si/Al = 13.4 can be prepared with cationic surfactant. Our results indicate that coal combustion byproducts can be utilized for producing mesoporous molecular sieves even though they contain significant amounts of impurities.
ISSN:	0888-5885 1520-5045
DOI:	10.1021/ie980275b