obtained for different R values. As observed for the ZrP gel in propanol (pattern a), the X-ray patterns of the ZrP(PP)x gel samples show the presence of a well-defined peak at 5.5° 2θ, corresponding to an interlayer distance of 16.2 Å, which is the same as that of ZrP intercalated with propanol, containing 2 mol of alcohol/mol of ZrP.