Synthesis and Characterisation of Zeolites From Coal Fly Ash (CFA)

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Title:	Synthesis and Characterisation of Zeolites From Coal Fly Ash (CFA)
Authors:	Chigondo, Mark Nyamunda, B
Keywords:	characterisation zeolites coal fly ash
Issue Date:	Aug-2013
Publisher:	IRACST – Engineering Science and Technology: An International Journal
Abstract:	In this study, disposed coal fly ash samples from Zimbabwe were used in synthesis of zeolites. The method of direct hydrothermal treatment with sodium hydroxide at different concentrations (2, 2.5, 3.5 and 4.5 moldm-3) at a constant temperature of 100°C and activation time of 24 h was applied. Characterisation of coal fly ash and confirmation of occurrence of the zeolite material was done using XRF, XRD, FTIR, and BET techniques. The zeolite materials formed were a mixture of zeolite Na-X (NaAlSi1.1O4.2225H2O), zeolite Na-A (Na2Al2Si3.3O8.867H2O), zeolite NaP1 (Na6Al6Si10O32H2O) and zeolite hydroxysodalite (Na1.08Al2Si1.68O7.441.8H2O). The variety and yield of zeolites formed depend on the concentration of sodium hydroxide used.
URI:	http://localhost:8080/xmlui/handle/123456789/92
ISSN:	2250-3498
Appears in Collections:	Research Papers

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