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AssigneesConsejo Superior de Investigaciones Cientificas, Universidad Politecnica de Valencia
InventorsAntonio Chica Lara, Avelino Corma Canós, Vicente Fornés Segúi, Urbano Díaz Morales
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The invention deals with a microporous crystalline material, with a characteristic X-ray diffractogram, comprised of oxygen tetrahedra and a metal (T+4 and T+3) with the possibility of introducing surface acidity produced by the substitution in the lattice of some T+4 cations by T+3 cations, which gives rise to a structural charge deficiency that may be compensated by protons, Brönsted acidity, and/or high ratio radium charge cations, Lewis acidity; and the obtaining method thereof, based on the preparation of a gel, its hydrothermal treatment under controlled conditions and the treatment of the resulting laminar material with a solution of an organic compound, a swollen material being obtained, which is subjected to a treatment for the formation of interlaminar pillars of polymeric oxides, obtaining a pillared material that maintains the separation between the sheets, even after calcination.
A pillared laminar oxide material with an interlaminar space pillared by at least a polymeric oxide comprising the oxides XO2 and Y2O3, wherein X represents one or more tetravalent elements and Y represents one or more trivalent elements, and which has, in its calcined form, an X-ray diffractogram with basal spacings and relative intensities corresponding to:
Dependencies are inferred from the claim text.