VERFAHREN ZUM ENTFERNEN VON UEBERGANGSMETALLIONEN AUS WAESSRIGER LOESUNG MIT HILFE EINES, KRISTALLINES UEBERGANGSMETALLALUMINAT ENTHALTENDEN, IONEN AUSTAUSCHERHARZES.

摘要

Crystalline transition metal aluminates having to the formula MAv_aZv_b.nAl(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.