Process for producing Mg-containing no-Al anionic clay
AssigneeAkzo Nobel N.V.
InventorsDennis Stamires, William Jones
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Abstract
This patent describes economical and environment-friendly processes for the synthesis of Mg-containing non-Al anionic clays. It involves (hydro)thermally reacting a slurry comprising a Mg metals source with a trivalent metals source to directly obtain Mg-containing non-Al anionic clay, the Mg sources being an oxide, hydroxide or a carbonate. There is no necessity to wash or filter the product. It can be spray dried directly to form microspheres or can be extruded to form shaped bodies. The product can be combined with other ingredients in the manufacture of catalysts, absorbents, pharmaceuticals, cosmetics, detergents, and other commodity products that contain anionic clays.
Claims14
A process for the preparation of a magnesium-containing non-Al anionic clay wherein said process is a one-step process wherein a 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 magnesium containing source being an oxide, a hydroxide, a hydroxycarbonate or a carbonate of magnesium, said anionic clay having interlayers containing carboxylate anions that are provided to said process.
Dependencies are inferred from the claim text.