Patent ID: 6077809
Filing Date: 2000-06-20
Classification: B01J,Y10T

Abstract:
A method for the preparation of a high-porosity adsorbent loaded with crystalline hydrous zirconium oxide which comprises the steps of:(a) bringing a porous carrier material having pores, wherein said porous carrier material is selected from the group consisting of crosslinked polyacrylate resins and crosslinked polystyrene resins, into contact with an alcohol solution containing a zirconium compound selected from the group consisting of zirconium oxychloride ZrOCl.sub.2 and zirconium oxynitrate ZrO(NO.sub.3).sub.2 so as to impregnate the pores of the porous carrier material with the alcohol solution;(b) drying the porous carrier material to give a porous material loaded with the zirconium compound by evaporation of the alcohol;(c) bringing the dried porous material into contact with an aqueous alkaline solution to effect hydrolysis of the zirconium compound; and(d) subjecting the porous material loaded with the hydrolyzed zirconium compound to a hydrothermal reaction in an aqueous medium at a temperature in the range from 100.degree. C. to 180.degree. C.