Comparative Study of Mg/M(III) (M=Al, Ga, In) Layered Double Hydroxides Obtained by Coprecipitation and the Sol–Gel Method
✍ Scribed by Marı́a A. Aramendı́a; Victoriano Borau; César Jiménez; José M. Marinas; José R. Ruiz; Francisco J. Urbano
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 450 KB
- Volume
- 168
- Category
- Article
- ISSN
- 0022-4596
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✦ Synopsis
Various layered double hydroxides (LDHs) consisting of magnesium and a trivalent metal (Al, Ga or In) in an Mg/M(III) ratio of 3 were prepared by precipitation from the corresponding nitrates and also from magnesium ethoxide and the acetylacetonates of the trivalent metals using the sol-gel method. The six LDHs thus obtained were calcined at 5001C. All solids were characterized by XRD and IR spectroscopy prior to and after calcination. Their textural properties were determined from nitrogen adsorption measurements and their surface chemical properties by CO 2 chemisorption.