Microwave synthesis process for ZSM-11 molecular sieve
The invention relates to a microwave synthesis process for a ZSM-11 molecular sieve. The process uses aluminum source, alkali source, silicon source, tetrabutylammonium bromide and de-ionized water as the raw materials and adopts the heating mode of microwave radiation. The reaction mixture is crystallized for 1 to 8 hours under microwave radiation and self-generated pressure at 130 to 180 DEG C, solid is separated from the mother liquid, and then the product is washed by the de-ionized water until the pH value is 8 to 9, thus obtaining the raw powder of the ZSM-11 molecular sieve. The microwave synthesis process for the ZSM-11 molecular sieve has the advantages of replacing traditional water heating by microwave radiation heating and obtaining the ZSM-11 molecular sieve with the advantages of high crystallinity, pure crystal phase and controllable and wide range of grain size, and the process accelerates the nucleation rate and crystal growth speed obviously and shortens the crystallization time greatly by pre-placing crystal seeds.