Patent ID: 9669387
Date: 2017-06-06
CPC Classifications: B01J,C01F,C01P,C04B

Claim:
1. Spheroidal alumina particles comprising a nitrogen adsorption isotherm volume, termed V meso , which is representative of the mesoporous volume, which is in the range 0.65 to 0.85 mL/g and a volume of pores with a diameter of less than 7 μm, termed V meso+macro , measured by mercury porosimetry, which is in the range 0.65 to 0.85 mL/g and for which the ratio Q=[(V meso+macro −V meso )/(V meso+macro )] is less than 10%, said particles comprising a mean diameter in the range 1.2 to 3 mm, a BET specific surface area in the range 150 to 300 m 2 /g and a settled packing density in the range 0.5 to 0.6 g/mL.