Effect of silicon source on the crystallization temperature of the cordierite

Hajjou, Hanaa; Saâdi, Latifa; Waqif, Mohamed; Fatah, Nouria

Type de document :

Article dans une revue scientifique

URL permanente :

http://hdl.handle.net/20.500.12210/12570

Titre :

Effect of silicon source on the crystallization temperature of the cordierite

Auteur(s) :

Hajjou, Hanaa [Auteur]
Laboratoire de Matière Condensée et Nanostructures [LMCN]
Saâdi, Latifa [Auteur]
Laboratoire de Matière Condensée et Nanostructures [LMCN]
Waqif, Mohamed [Auteur]
Laboratoire de Matière Condensée et Nanostructures [LMCN]
Fatah, Nouria [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Titre de la revue :

Journal of Materials and Environmental Science

Numéro :

Pagination :

176-186

Date de publication :

2016

Discipline(s) HAL :

Chimie/Catalyse

Résumé en anglais : [en]

The effect of different silicon sources - silica gel SiO2, tetraethylorthosilicate Si (OC2H5)4 and silicic acid H2Si2O5 - on the crystallization of cordierite were investigated. Aluminum chloride (AlCl3-6H2O) and magnesium ...
Lire la suite >The effect of different silicon sources - silica gel SiO2, tetraethylorthosilicate Si (OC2H5)4 and silicic acid H2Si2O5 - on the crystallization of cordierite were investigated. Aluminum chloride (AlCl3-6H2O) and magnesium chloride (MgCl2- 6H2O) were respectively used as sources of Aluminum and magnesium. The precursors of cordierite were prepared through the coprecipitation method. The different starting materials were mixed in an aqueous medium in stoichiometric proportions of the cordierite (2Al2O3, 2MgO, 5SiO2. Different experimental techniques (TGA, X-ray, IR, SEM and dilatometry) were used to characterize the prepared precursors. The obtained results indicated the presence of several crystalline phases such as mullite, spinel, corundum, enstatite, cristobalite at low temperature (1000 °C, 1100 °C) beside the amorphous phase. At 1200 °C, the crystallization of μ-cordierite was observed; this crystalline phase was transformed into α-cordierite (Indialite) at 1300 °C. By increasing the temperature up to 1400 °C the main phase obtained is α-cordierite with an amount of spinel that varies with the silicon sources. The morphological analysis showed that the shape and the size of grains of α-cordierite phase were influenced by the nature of silicon source. Keywords: cordierite, silicon, calcination, spinel, coprecipitation.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Catalyse pour l’énergie (CATEN)

Date de dépôt :

2019-09-25T14:05:06Z
2024-04-19T08:05:26Z

Numéro de version	Lien	Date de modification
2	20.500.12210/12570*	2024-04-19T08:03:58Z
1	20.500.12210/12570.1	2019-09-25T14:05:06Z

Effect of silicon source on the crystallization ...

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Effect of silicon source on the crystallization ... BibTeX CSV Excel RIS

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Effect of silicon source on the crystallization ...

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