Method for preparing hybrid porous molecular sieve by virtue of salt particle template method

The invention relates to a method for preparing a hybrid porous molecular sieve by virtue of a salt particle template method, and in particular relates to synthesis of a hierarchical molecular sieve by taking sodium chloride as a template. The synthesis comprises the following steps: firstly, synthesizing salt particles, then uniformly precipitating various molecular sieves on the surfaces of the salt particles which are taken as hard templates, and finally synthesizing a hierarchical molecular sieve reserving salt particle cavities by virtue of a process of washing off the salt particles. The method disclosed by the invention has the following beneficial effects: (1) by virtue of the salt particle template, the molecular sieve material simultaneously integrating molecular sieve pores and salt particle-formed hierarchical pores is synthesized; by regulating the sizes of the salt particles, an effect of regulating the hierarchical porous molecular sieve is achieved; therefore, the method is direct in effect, simple and easy to implement; (2) the adopted salt particles are green and non-toxic, so that environmental pollution in the process of synthesizing the hierarchical porous molecular sieve is reduced; and (3) the salt particles protected by virtue of a protective agent can be further prevented from being dissolved in the synthesis process, so that influence on the formation of subsequent molecular sieves is avoided.