Process for producing high porosity boehmite aluminas

Details Process for producing high porosity boehmite aluminas Process for producing high porosity boehmite aluminas

C - Chemistry, Metallurgy

01

F

C01F 7/02 (2006.01) C01B 15/12 (2006.01) C01F 17/00 (2006.01)

Patent

CA 2618238

A method for producing high porosity boehmite alumina wherein an aqueous boehmite slurry is mixed with an effective amount of a modifier comprising a hydroxide or oxide of an element of group IIIA-VIA on the Periodic Table of Elements and having a pKsp of greater than 11 to produce a precursor mixture and hydrothermally aging the precursor mixture at an elevated temperature under agitation with an effective consumptive power of greater than 1 kW/m3.

La présente invention décrit une méthode de production d'une alumine de type boehmite de porosité élevée selon laquelle une boue de boehmite aqueuse est mélangée à une quantité active d'un agent modificateur comprenant un hydroxyde ou un oxyde d'un élément des groupes IIIA-VIA du Tableau Périodique et dont le pKsp est supérieur à 11 pour produire un mélange précurseur, qui est ensuite vieilli par hydrothermie à température élevée sous agitation, la puissance consommée efficace étant supérieure à 1 kW/m 3.

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