CobaltMaghrebV1, Maroc, Analysis, bibRecord, 000155

Cobalt spinel CoAl2O4 via sol-gel process: elaboration and surface properties

Identifieur interne : 000155 ( Maroc/Analysis ); précédent : 000154; suivant : 000156

Cobalt spinel CoAl2O4 via sol-gel process: elaboration and surface properties

Auteurs : S. Chemlal [Maroc] ; A. Larbot [France] ; M. Persin [France] ; J. Sarrazin [France] ; M. Sghyar [Maroc] ; M. Rafiq [Maroc]

Source :

Materials Research Bulletin [ 0025-5408 ] ; 2000.

RBID : ISTEX:003A81CF6BC6B3570858CF3D2175F99ACA36D531

Descripteurs français

Pascal (Inist)
- 8110D, 8270, Aire superficielle, Al Co O, Aluminium oxyde, Caractérisation, Charge superficielle, CoAl2O4, Cobalt oxyde, Coulée en barbotine, Cristallisation, Déstatisation, Etude expérimentale, Membrane, Mobilité électrophorétique, Morphologie, Poudre, Procédé sol gel, Propriété thermique, Spinelles, Suspension colloïdale, Traitement thermique, Ultrafiltration, pH.

English descriptors

KwdEn :
- A. Ceramics, A. Inorganic compounds, A. Oxides, Aluminium oxide, B. Sol-gel chemistry, Characterization, Cobalt oxide, Colloidal suspension, Crystallization, D. Surface properties, Destatization, Electrophoretic mobility, Experimental study, Heat treatment, Membrane, Morphology, Powder, Slip casting, Sol gel process, Spinels, Surface area, Surface charge, Thermal properties, Ultrafiltration, pH.

Abstract

In this work the preparation of cobalt spinel CoAl2O4 is described. The technique of colloidal solution destabilization was used as the sol-gel process. The powder obtained from the dried gel was characterized by thermal analysis (thermogravimetric and differential), X-ray diffraction, infrared spectroscopy, and specific surface area measurement. Crystallization of CoAl2O4 spinels occurs at about 400°C. The study of surface properties (surface charge and electrophoretic mobility) of the spinel powder fired at 600°C, in suspension in different electrolyte solutions (10−3 molar ionic strength), shows that the spinel material charge depends on the pH of the solution. The spinel sol was used for the preparation of membrane by the slip-casting method.

Url:

https://api.istex.fr/document/003A81CF6BC6B3570858CF3D2175F99ACA36D531/fulltext/pdf

DOI: 10.1016/S0025-5408(00)00444-X

Affiliations:

Links to Exploration step

ISTEX:003A81CF6BC6B3570858CF3D2175F99ACA36D531

Le document en format XML

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Serveur d'exploration sur le cobalt au Maghreb

Cobalt spinel CoAl2O4 via sol-gel process: elaboration and surface properties

Cobalt spinel CoAl2O4 via sol-gel process: elaboration and surface properties

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

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