Texture control of metal double hydroxides by oxoanions using preliminary sorption of alkyl sulfates

Specific features of the modification of the texture and bulk properties of mixed nickel-chromium double hydroxides on the pillaring of their layered structure with oxoanions based on silicon, vanadium, molybdenum, and tungst en are revealed by the investigation of the adsorption-desorption of water vapor and X-ray diffraction analysis. It is shown that pillaring of the hyd roxides coprecipitated in the presence of sodium alkyl sulfates with differ ent carbon chain lengths (8, 10, and 12 carbon atoms) increases the specifi c surface area of the obtained samples. The maximal increase in the specifi c surface area was obtained for the hydroxides after preliminary sorption o f sodium octyl sulfate.