A new synthesis and characterization of magnesium-aluminium hydroxides

Abstract

Summary A new synthesis of Mg-Al double hydroxides is described, that gives products relatively low (0.8–1.0%) in CO 2 . The general formula [Mg 1−x Al x (OH) 2 ][(OH) x (H 2 O) 0.81−x ] with 0.23 ≤ x ≤ 0.33 is proposed. Cell parameters and thermal data are given. The c -axial length decreases with Al-content; this is attributed to increased electrostatic attraction between layers.