Layered double hydroxide, its preparation and use

摘要

Layered double hydroxide containing brucite-like main layers alternating with interlayers, said brucite-like main layers containing at least one trivalent metal and at least one divalent metal selected from the group consisting of Mg, Zn, and Ni, and said interlayers comprising a tetrahedrally coordinated trivalent metal. Said layered double hydroxide can be prepared by solvothermally treating a slurry or solution comprising at least one trivalent metal source and at least one divalent metal source selected from magnesium sources, zinc sources, and nickel sources; the molar ratio divalent metal/trivalent metal in the slurry or solution being in the range from 0.7 to 1.6.