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handle: 10261/34166
[EN] The invention relates to a microporous crystalline zeolite material, zeolite ITQ-28, the production method thereof and the use of same. More specifically, the invention relates to a microporous crystalline zeolite material, ITQ-28, which, in the calcined state and in the absence of defects in the crystalline lattice thereof, manifested by the presence of silanols, is characterised by having empirical formula x (M1/nXO2): y Y02: Si02, wherein: M is selected from H, at least one inorganic cation with charge +n, preferably alkalines or alkaline earths, and a mixture of both; X is at least one chemical element in oxidation state +3, preferably Al, Ga, B, Fe, Cr or mixtures thereof; Y is at least one chemical element in oxidation state +4, which is different from Si, preferably Ge, Ti, Sn, V or mixtures of same; x has a value of between 0 and 0.2 inclusive; and y has a value of between 0 and 0.1 inclusive. The invention is further characterised in that the material as it is synthesised has an x-ray diffraction pattern with at least values of angle 2 theta (degrees) and the relative intensities given in table I. The invention also relates to the method of preparing said material and to the use thereof in the conversion of organic compounds.
[ES] Material cristalino microporoso de naturaleza zeolítica, zeolita ITQ-28, procedimiento de preparación y uso. La presente invención se refiere a un material cristalino microporoso de naturaleza zeolítica, ITQ-28, caracterizado porque tiene, en estado calcinado y en ausencia de defectos en su red cristalina manifestados por la presencia de silanoles, la fórmula empírica x (MlInX02) : y Y02 : Si02 O en la que M está seleccionado entre H+, al menos un catión inorgánico de carga +n, preferentemente alcalinos o alcalinotérreos, y una mezcla de ambos, X es al menos un elemento químico de estado de oxidación +3, preferentemente Al, Ga, B, Fe, Cr o mezclas de ellos, Y es al menos un elemento químico con estado de oxidación +4 distinto de Si, preferentemente Ge, Ti, Sn, V o mezclas de los mismos, x toma un valor comprendido entre O y 0,2, ambos incluidos, y toma un valor comprendido entre O y 0,1, ambos incluidos, y porque el material, tal y como se sintetiza, tiene un patrón de difracción de rayos X con, al menos, los valores de ángulo 20 (grados) e intensidades relativas mostrados en la tabla 1, a su procedimiento de preparación y a su uso en la conversión de compuestos orgánicos.
Fecha de presentación internacional: 24.09.2004. - Titulares: Consejo Superior de Investigaciones Científicas (CSIC). - Universidad Politécnica de Valencia
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