The use of microwave radiation for the calcination of nanocomposite materia
ls is shown here to provide a rapid and inexpensive method of preparing nan
oporous materials. The intense heat produced by microwave radiation gives p
roducts of the same quality as those produced by furnace methods in a fract
ion of the time. The upper image shows MCM-48 after 10 min in the microwave
, the lower sample after 135 min in a furnace.