The invention belongs to the technical field of synthesis of
zeolite molecular sieves, aims at providing a preparation method of a green and simple nano ZSM-5
molecular sieve, and in particular relates to a method for preparing the nano ZSM-5
molecular sieve through adding a high molecular
polymer, a
silicon source, an aluminum source, an
organic structure directing agent and de-ionized water intoa synthesis process and uniformly mixing to form
sol-gel of a
molecular sieve synthetic precursor, and then preparing the
sol-gel into
dry glue, and utilizing a water steam assisted
crystallization method. According to the method provided by the invention, the prepared nano ZSM-5 molecular
sieve has the characteristics of relatively high
crystallization degree, the
crystal size capable of being regulated to be between 10 and 100nm, a mesoporous-micropore composite multi-grade structure, relatively great specific surface area and the like. According to the preparation method of the nano ZSM-5molecular
sieve, provided by the invention, the technical defects that the nano molecular
sieve is difficult to separate and collect from a mother solution, a lot of synthetic waste liquid is discharged and the like are avoided, and the synthesis efficiency also can be improved; the preparation method is a simple and efficient, and environment-friendly synthetic
route and has a certain industrialized application prospect.