Hybrid catalysts containing a microporous zeolite and a...

B - Operations – Transporting – 01 – J

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B01J 29/06 (2006.01) B01J 21/00 (2006.01) B01J 29/40 (2006.01)

Patent

CA 2248465

There is provided a novel hybrid catalyst suitable for the conversion of hydrocarbons and other organic compounds. The catalyst comprises 70 wt % to 85 wt % of microporous zeolite-type particles embedded in 10 wt % to 30 wt % of larger mesoporous solid particles, the latter being used as a cocatalyst. Optionally, up to about 20 wt% of an inert clay binder may be used. Preferably, the zeolite-type particles are particles having the ZSM-5 structure and in the acidic form. Also preferably, the mesoporous solid particles used as a cocatalyst are particles of an oxide selected from the group consisting of silica, alumina, aluminosilica, magnesium oxide, titanium oxide, iron oxide, zirconium oxide, chromium oxide, nickel oxide, and mixtures thereof. Also preferably, the mesoporous oxide acts as a support for a dehydrogenating species selected from a group consisting of gallium oxide, zinc oxide, manganese oxide, chromium oxide, molydennum oxide, tungsten oxide, a precious metal, a precious metal oxide, and mixtures thereof.

Divulgation d'un nouveau catalyseur hybride utile pour la conversion d'hydrocarbures et d'autres composés organiques. Ce catalyseur comprend de 70 à 85 %, en poids, de particules microporeuses de type zéolite noyées dans de 10 à 30 %, en poids, de particules solides mésoporeuses plus grosses, ces dernières servant de cocatalyseur. Facultativement, on peut utiliser jusqu'à 20 %, en poids, d'un liant argileux inerte. De préférence, les particules de type zéolite sont des particules de structure ZSM-5 et se trouvent sous forme acide. De préférence également, les particules solides mésoporeuses utilisées comme cocatalyseur sont des particules d'un oxyde choisi parmi le groupe constitué de la silice, de l'alumine, du silicate d'alumine, des oxydes de magnésium, de titane, de fer, de zirconium, de chrome et de nickel, et de mélanges de ces composés. De préférence, l'oxyde mésoporeux agit également comme support pour une espèce déshydrogénante choisie parmi le groupe constitué des oxydes de gallium, de zinc, de manganèse, de chrome et de molybdène, des métaux précieux, des oxydes de métaux précieux et des mélanges de ces composés.

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