MIXED MOLECULAR SIEVE CATALYST AND PREPARATION METHOD AND USE THEREOF

摘要

The invention provides a mixed molecular sieve catalyst, comprising 5-30 wt % Y molecular sieve, 5-30 wt % ZSM-5 molecular sieve and the balance of matrix component and binder component. The invention further provides a method of preparing the mixed molecular sieve catalyst, comprising the following steps: mixing the Y molecular sieve, the ZSM-5 molecular sieve with a matrix material, a binder precursor, a pore former, a dispersant and water to formulate an aqueous slurry; spray drying the slurry; and baking. The invention further provides a method of preparing olefins from methanol with the use of the catalyst. By use of the catalyst of the invention, the selectivity to C3 and C4 olefins is improved significantly.

主权项

1. A mixed molecular sieve catalyst, comprising from 5 to 30 wt % Y molecular sieve, from 5 to 30 wt % ZSM-5 molecular sieve and the balance of matrix component and binder component based on the total weight of the catalyst, wherein the particle diameter of the catalyst is from 50 to 110 μm.