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Synthesis of zeolite of type A from bentonite by alkali fusion activation using Na2CO3 / Ma, Hongchao in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 454–458 Titre : Synthesis of zeolite of type A from bentonite by alkali fusion activation using Na2CO3 Type de document : texte imprimé Auteurs : Ma, Hongchao, Auteur ; Yao, Quantong, Auteur ; Fu, Yinghuan, Auteur Année de publication : 2010 Article en page(s) : pp 454–458 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Zeolite  A  Hydrothermal  method. Résumé : Optimization studies were carried out for the synthesis of zeolite A by a hydrothermal method using alkali-activated bentonite as raw material. The process of alkali fusion activation and optimization of the composition were studied by TG-DTA, XRD, and calcium ion exchange capacity. It was found that a mixture of additional alumina (aluminum hydroxide) and bentonite was converted to highly reactive sodium silicate, sodium aluminate, and aluminosilicate by alkali fusion activation using Na2CO3 at high temperature. Zeolite A with a maximum crystallinity of 82.7% and calcium ion exchange capacity of 302 mg of CaCO3/g was obtained at optimized conditions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901205y [article] Synthesis of zeolite of type A from bentonite by alkali fusion activation using Na2CO3 [texte imprimé] / Ma, Hongchao, Auteur ; Yao, Quantong, Auteur ; Fu, Yinghuan, Auteur . - 2010 . - pp 454–458. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 454–458 Mots-clés : Zeolite  A  Hydrothermal  method. Résumé : Optimization studies were carried out for the synthesis of zeolite A by a hydrothermal method using alkali-activated bentonite as raw material. The process of alkali fusion activation and optimization of the composition were studied by TG-DTA, XRD, and calcium ion exchange capacity. It was found that a mixture of additional alumina (aluminum hydroxide) and bentonite was converted to highly reactive sodium silicate, sodium aluminate, and aluminosilicate by alkali fusion activation using Na2CO3 at high temperature. Zeolite A with a maximum crystallinity of 82.7% and calcium ion exchange capacity of 302 mg of CaCO3/g was obtained at optimized conditions. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901205y