Layered double hydroxides with low Al content and new intercalate structures

Abstract Layered double hydroxides (LDHs) containing Mg 2 + and Al 3 + as divalent and trivalent cations, respectively, have been synthesized by a procedure based on hydrolysis of a mixture of metal alcoholates, and have been characterized mainly by Wide Angle X-ray diffraction (WAXD) and Fourier Transform Infrared (FTIR) measurements. The used procedure is suitable to prepare LDHs with Al molar fractions, x Al  = Al/(Al + Mg), as low as 0.1. The same LDH preparation procedure, for x Al