Patent ID: 6652828
Filing Date: 2003-11-25
Classification: B01J,C01B,C01G,C01P,C09C

Abstract:
A process for the preparation of a magnesium-containing non-Al anionic clay comprising a one-step process wherein a reaction mixture comprising an aqueous suspension comprising a trivalent metal source and at least a magnesium containing source as a divalent metal source is provided and reacted to obtain a magnesium-containing non-Al anionic clay, said divalent or trivalent metal source or both selected from the group consisting of a hydroxycarbonate, carbonate, bicarbonate, acetate, hydroxyacetate, oxalate, nitrate, hydroxide, oxide, formate anions or mixtures thereof, and/or there being a source of anions selected from the group consisting of hydroxycarbonate, carbonate, bicarbonate, acetate, hydroxyacetate, oxalate, nitrate, hydroxyl, formate anions or mixtures thereof, other than anions associated with said divalent or trivalent metal, said anionic clay having interlayers containing anions selected from the group consisting of hydroxycarbonate, carbonate, bicarbonate, acetate, hydroxyacetate, oxalate, nitrate, formate anions or mixtures thereof.