03/003 - Procedimiento para la alquilación de compuestos aromáticos

La presente invención se refiere a un procedimiento para la alquilación de compuestos aromáticos, caracterizado porque comprende hacer reaccionar bajo condiciones de alquilación, en las que existe al menos parcialmente fase líquida, un agente alquilante seleccionado entre una olefina, un alcohol, un compuesto polialquilado, y mezclas de ellos, con un compuesto aromático de partida, en presencia de un catalizador, siendo dicho catalizador un material cristalino microporoso de naturaleza zeolítica denominado ITQ-22. Se considera que el catalizador y la aplicación a que se refiere la presente invención es particularmente valiioso para la producción de cumeno.// A new microporous, crystalline, zeolitic material (I), designated -ITQ-22-, contains silicon dioxide and optionally germanium oxide, hydrogen ions, inorganic cations, trivalent elements and/or other tetravalent elements, and is characterized by its empirical formula and X-ray diffraction pattern. A new microporous, crystalline, zeolitic material (I), designated -ITQ-22-, has formula (I) (in the calcined state and in the absence of crystal lattice defects shown by the presence of silanols) and an X-ray diffraction pattern, in -as-synthesized- form, with maxima at 2 theta values of 8.02 degrees (very strong), 8.43 degrees (very strong), 9.31 degrees (medium), 10.64 degrees (very strong), 20.26 degrees (medium), 21.81 degrees (strong) and 22.53 degrees (very strong). x (M1/nXO2) : y YO2 : z GeO2 : (1-z) SiO2 (I) M = H+ or inorganic cation(s) of charge n+; X = element(s) in the +3 oxidation state, preferably Al, Ga, B, Fe or Cr; Y = element(s) in the +4 oxidation state (other than Si or Ge), preferably Ti, Sn or Cr; x = less than 0.2 (preferably less than 0.1; possibly zero); y = less than 0.1 (preferably less than 0.05; possibly zero); and z = less than 0.8 (preferably 0.005-0.5; possibly zero). (I) has an X-ray diffraction pattern, in calcined form, with maxima at 2 theta values of 6.97 degrees (medium), 8.00 degrees (very strong), 8.40 degrees (very strong), 9.28 degrees (medium), 10.62 degrees (very strong), 20.18 degrees (medium), 21.74 degrees (strong) and 22.54 degrees (very strong). An Independent claim is also included for the preparation of (I).

Ficha técnica

Tipo de tecnología PATENTE
Inventores Susana Valencia Valencia, Fernando Rey García, Avelino Corma Canos
Estado de protección Nacional: P200301058 - 30/04/2003
Extension Internacional: PCT/ES 03/00246 - 23/05/2003
Texto de la patente http://lp.espacenet.com/publicationDetails/biblio?CC=ES&NR=2217980A1#&KC=A1#&DB=lp.espacenet.com&locale=es_LP
Responsable Corma Canós, Avelino