Method of preparation of catalytic compositions, catalytic composition obtained by cracking and catalytic composition

摘要

The invention relates to a method of preparation of catalytic compositions. / p & & p & according to the invention, it is possible to prepare in 4 a mixture of a zeolite containing an aqueous alkali metal 2 and of aluminum chlorhydrol 1, is formed at 5 the mixture to obtain the compounds of the particular of aluminium zeolitechlorhydrol containing an excess quantity of approximately 1% by weight of an oxide of an alkaline melal; it is calcined the compounds in 6 has a temperature which is greater at approximately 500c; and the exchange of ions and washed in 7 calcined in order to obtain the compounds of the catalyst particles having a content of alkali metal oxide of a lower 0,50 by weight approximately. / p & & p & the invention applies in particular in the industry of oil.