Cubic mesoporous molecular sieve catalyst with micropore canals, preparation method and use thereof

The invention relates to a cubic mesoporous molecular sieve catalyst with micropore canals, a preparation method and use thereof. The catalyst comprises the raw materials of an aluminium source, a silicon source, sodium hydroxide, a template, surfactant and de-ionized water, and is prepared through the following steps: firstly preparing a silicon-aluminium precursor; and then utilizing a self-assembly function between the precursor and the surfactant to obtain stable molecular sieve materials. The preparation method comprises two methods of hydro-thermal synthesis and microwave synthesis. Dueto the adoption of the microwave synthesis method, the cubic mesoporous molecular sieve catalyst in the invention has the advantages of shortening the crystallization time, obtaining a synthesized molecular sieve with a cubic mesoporous structure, having micropore canals, having acid strength similar to that of a ZSM-5 molecular sieve, and having relatively higher catalytic activity when used forthe catalytic cracking reaction of 1,3,5-tri-isopropyl benzene.