Preparation method and application of composite supported beta molecular sieve catalyst

The invention relates to a preparation method and application of a composite supported beta molecular sieve catalyst, and belongs to the field of molecular sieve catalysts. The preparation method of the composite supported beta molecular sieve catalyst comprises the following steps: (1) roasting; (2) preparing an impregnation liquid; (3) stirring; (4) dipping under a water bath condition; (5) drying; and (6) roasting to obtain the composite Co-Zn/beta molecular sieve. The Co and Zn elements are used as active components to prepare the composite supported beta molecular sieve catalyst, the composite supported beta molecular sieve catalyst is used for selective oligomerization of isobutene, the conversion rate of isobutene can reach 95% or above, the selectivity of C8 can reach 80% or above, and compared with a traditional molecular sieve catalyst, the catalytic efficiency is greatly improved. 本发明涉及一种复合负载型β分子筛催化剂的制备方法及应用，属于分子筛催化剂领域。复合负载型β分子筛催化剂的制备方法，包括如下步骤：(1)焙烧；(2)制备浸渍液；(3)搅拌；(4)水浴条件下浸渍；(5)干燥；(6)焙烧，得到复合型Co-Zn/