Transition metal aluminates

Details Transition metal aluminates Transition metal aluminates

C - Chemistry, Metallurgy

01

F

403/2, 23/238, 5

C01F 7/02 (2006.01) B01J 39/08 (2006.01)

Patent

CA 1165535

ABSTRACT Crystalline transition metal aluminates having to the formula MA?Z??nA1(OH)3?mH2O where M is a transition metal having a valence of +2 selected from Cu, Zn, Mn, Fe, Co, and Ni, where AZ represents negative valence ions or radicals, v is a valence of -1, -2, or -3, n is a value to provide a mol ratio of Al/M of at least 1/1, and m is an integer of from zero to the maximum for waters of hydration, with (va)+(vb) equal to 2, are prepared in alkaline aqueous medium wherein transition metal compounds to form adducts with amorphous hydrous alumina, Al(OH)3, said adducts forming crystals when heated, said aluminates being useful as ion exchangers and as spinel precursors.

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