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Communication Dans Un Congrès Année : 2006

Mesoporous alumina of controlled pore size obtained by surface alumination of pure silica SBA 15

Résumé

Silica-alumina oxide supports were synthesized by surface alumination of mesoporous silica SBA-15 with Al isopropoxide in organic solvents. These materials were characterised by N2 adsorption-desorption isotherms, XRD, 27Al NMR and cumene cracking. The chemical nature of the surface was probed by an original method based on Mo thermal spreading which proves to be very sensitive to the surface properties. The latter vary continuously with Al grafting from pure silica to pure alumina. After three graftings, a well-ordered, alumina-like mesoporous support containing 30 wt% Al2O3 is obtained with a specific surface area of 326 m2.g-1 and a narrow pore size distribution centred on 57 Å.

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Catalyse
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Dates et versions

hal-00096788 , version 1 (20-09-2006)

Identifiants

  • HAL Id : hal-00096788 , version 1

Citer

Emmanuel de La Rochefoucauld, Xavier Carrier, Jean-Marc Krafft, Juliette Blanchard. Mesoporous alumina of controlled pore size obtained by surface alumination of pure silica SBA 15. Scientific Bases for the Preparation of Heterogeneous Catalysts, Proceedings of the 9th International Symposium, 2006, France. pp.13-20. ⟨hal-00096788⟩
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