{HEAD ~ The hydroxide phase} is preferably of the hydrotalcite type with indexed lattice parameters in {TAIL ~ the hexagonal system} a=3.122 Å±0.01 Å and c=7.567 Å±0.01 Å 
{ HEAD ~ The hydroxide phase } is preferably of the hydrotalcite type with indexed lattice parameters in { TAIL ~ the hexagonal system } a=3.122 Å±0.01 Å and c=7.567 Å±0.01 Å
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH