Process for the preparation of a catalytic Support gamma Alumina with high thermal stability

摘要

The present Invention relates to a process for the preparation of a catalyst support of gamma Alumina with high thermal stabilityA composition which is expressed by the following: mxa1203 and H20 where M is one or more of the elements of the family of the lanthanides and / or Rare EarthsOr the first of a series of Transition Metals and / or Series of the Alkaline Earth Metals,All of the periodic table; "X" stands for the molar fraction in weight between 3 percent and 15 percent,Preferably between 3 and 10% and the Water content varies between 1 and 2 molar ratio.Characterized in that it comprises the steps of: Dewatering of a support base and a oxidohidru00f3xido aluminium Aluminium trihydroxide at a temperature of between 400 and 500 degrees C; to incorporate the SOPRotate amino salts with a ratio to 10 percent by weight of Alumina precursor, but can be increased up to 30 Weight percent, if they require additional Crystalline phases,Mix the two phases.The Solid Support with Concentrated aqueous solution of salts of polyvalent cations by vigorous shaking of the suspension or in the form of incipient Impregnation during 1 to 12 hHours at room temperatureDry the mixture formed between 90 and 110 deg C for 5 to 12 hours and calcinarla in oxidizing atmosphere at temperatures between 200 and 1100 deg C for a period of time greater than 4 hours.