A process for producing ultra-fine zeolite nanocrystals and their
aggregates having an intracrystalline void within 1.about.10 nanometers in
size that comprises at least as follows: preparing a transparent
silicate-containing aqueous solution, with optional elements as Aluminum,
Titanium and organic template molecules, known to produce zeolite; heating
the solution under a temperature of 25.degree..about.100.degree. C. for a
certain period of time while keeping the solution still in a transparent
state without forming colloidal zeolite; adding an anionic surfactant to
precipitate the inorganic components; forming the dried inorganic-organic
hybrid precipitate into a desired shape and then heating the shaped body
with steam under a temperature of 100.degree..about.200.degree. C. and a
relative humidity of 30.about.85% for 1.about.3 days to produce ultra-fine
zeolite crystals having a size below 30 nanometers, and aggregates of
ultra-fine zeolite crystals with a large number of intracrystalline voids
whose size is within 1.about.10 nanometers.
