Porous aluminas and their preparation

Details Porous aluminas and their preparation Porous aluminas and their preparation

B - Operations, Transporting

01

J

23/241, 252/32

B01J 20/08 (2006.01) C01F 7/44 (2006.01)

Patent

CA 1178785

ABSTRACT An alumina comprising particles which are aggregates or agglomerates of primary particles in which the internal porosity is provided by micropores of predetermined average width within the range 4 to 20 Angstroms and in which the pore width over the majority of the pores is within 1 Angstrom of the predetermined value, and a method for producing such an alumina by heating a particulate hydrous alumina to dehydrate it under an atmosphere in which the partial pressure of water vapour is maintained essentially constant at a predetermined value.

371833

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