Preparation of Nanoporous Zeolite Using Polyurethane Foam

We precipitate clay-like alumino-silicates on a polyurethane foam at 120 deg. C/ 24 hrs. The monolith is then washed and calcined at 500 deg.C to yield a nanoporous zeolite which then is acidified with NH4+  to generate the acid form for screening with alcohols.

This is the polyurethane foam before treatment with the mineral solution.