A method for preparing a controlled particle size B-Al-ZSM-5 zeolite and Application

The present invention provides a method for preparing a controlled particle size and Application of a B-Al-ZSM-5 zeolite, boron source, aluminum source, silicon source, alkali source, inorganic salts, template as raw materials in the reaction system seeding, crystallization in the crystallization vessel was filtered, washed, dried, calcined, obtained particle diameter of 100nm-15μm of B-Al-ZSM-5 zeolite. The present invention is simple synthesis process, synthesis of recyclable waste recycling, thus reducing the discharge of waste water, reducing consumption of raw materials and production costs; ZSM-5 by the addition to the reaction system, B-ZSM-5, Silicalite-1 nano zeolite seed crystals, the particle size can effectively regulate B-Al-ZSM-5 zeolite; the synthesis of the present invention B-Al-ZSM-5 zeolite catalyst for methanol synthesis reaction of propylene, propylene having a high selectivity of methanol conversion and catalyst life.