| abstract |
Provided is a preparation method for a hollow single crystal Beta molecular sieve. According to the method, the molecular sieve can be directly prepared by means of one-step hydrothermal crystallization of a gel formed by fully mixing a silicon source, an aluminum source, an inorganic base, a microporous template agent and an organic additive of a lactam R, and the synthesized product is formed by orderly stacking and connecting primary nanoparticles having a primary particle size of 10-30 nm. In the method, inexpensive N-methyl-2-pyrrolidone or homologous 2-pyrrolidone, N-ethyl-2-pyrrolidone or N-isopropyl-2-pyrrolidone thereof is used as an organic additive to synthesize a hollow single crystal Beta molecular sieve by means of a one-step method, thus replacing the traditional two-step acid-base treatment for obtaining a hollow structure, and same is an economical, efficient and simple method. |