High-porous activated alumina and method
Abstract
Abstract THIS INVENTION IS ADDRESSED TO THE PREPARATION OF AGGLOMERATES OF ACTIVATED ALUMINA HAVING A HIGH DEGREE OF POROSITY AND MECHANICAL STRENGTH AND IN WHICH THE POROUS VOLUME IS WITHIN THE RANGE OF 50-100 CM. 3/100 GRAMS WITH A LARGE NUMBER OF PORES HAVING A DIAMETER GREATER THAN 0.1 MICRON IN WHICH DEHYDRATED ALUMINA IS REDUCED TO A PARTICLE SIZE WITHIN THE RANGE OF 1 TO 25 MICRONS AND IMPREGNATED WITH WATER, WITH OR WITHOUT MIXTURE WITH AN ORGANIC NAPHTHALENE TYPE MATERIAL AND IN WHICH THE AMOUNT OF WATER IS LIMITED TO AN AMOUNT WHICH DOES NOT EXCEED THE POROUS VOLUME OF THE PARTICLES BY MORE THAN 8 PERCENT. THE IMPREGNATED PARTICLES ARE MOLDED INTO AGGLOMERATES, AGED AND THEN REACTIVATED BY CALCINATION AT ELEVATED TEMPERATURES.
Inventors
- 👤 Denis Papee
- 👤 Michel Lavalou
Bibliographic Details
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