Das, Rituparna and Aich, Stibhajit and Naskar, Milan Kanti (2017) One pot non-emulsion based hydrothermal synthesis of urchin-shaped hydroxy sodalite using waste coal fly ash. Indian Journal Of Chemistry Section A-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry , 56 (4). pp. 394-398. ISSN 0376-4710

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Abstract

Urchin-shaped hydroxy sodalite particles have been synthesized by one pot non-emulsion based hydrothermal conversion of coal fly ash at 100 degrees C for 96 h in the absence of any surfactants. Crystallization behavior of the particles has been studied by X-ray diffraction, and the characteristic vibration bands of hydroxy sodalite were confirmed by FTIR spectroscopy. BET surface area of the particles are found to be 193, 197, 82 and 44 m(2) g(-1) for the reaction time of 24 h, 48 h, 72 h and 96 h, respectively. FESEM images revealed that the thread-ball-like particles are converted into urchin-shaped hydroxy sodalite with increasing reaction time from 24 h to 96 hat 100 degrees C. The elemental analysis of the product studied by EDX indicates the Si/A1 and Na/Al ratios of 1.28 and 1.03, respectively which is close to the stoichiometric composition of hydroxy sodalite.

Item Type:	Article
Subjects:	Structural Clay Products
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	23 Jan 2018 11:39
Last Modified:	23 Jan 2018 11:39
URI:	http://cgcri.csircentral.net/id/eprint/4016

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