| 摘要 |
<p>The invention relates to a microporous cristalline material with a characteristic X ray diffractogramme, comprised of oxigen tetrahedra and a metal (T?+4 and T+3¿) with the possibility of introducing superficial acidity produced by the substitution in the network of certain cations T+4 by cations T+3, resulting in a structural charge deficiency which can be compensated by protons, Brönsted acidity, and/or high charge-reduced ratio cations, Lewis acidity. The preparation method is based on the synthesis of a gel, its hydrothermal treatment in controlled conditions, and the treatment of the laminar material resulting in a solution of an organic compound, preferably a long hydrocarbon chain containing a proton acceptor group. This swollen material is subjected to a specific treatment for the formation of interlaminar pillars of polymer oxides in order to obtain a pillared material which maintains the separation between the laminas, even after calcination.</p> |
