| Titre : | Synthesis of zeolite of type A from bentonite by alkali fusion activation using Na2CO3 (2010) |
| Auteurs : | Ma, Hongchao, Auteur ; Yao, Quantong, Auteur ; Fu, Yinghuan, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 2, Janvier 2010) |
| Article en page(s) : | pp 454–458 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | 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 |
