Catalyst for preparing propylene and ethylene through MTBE conversion

The invention discloses a catalyst for preparing propylene and ethylene through MTBE conversion, which belongs to the field of catalysts, the catalyst comprises the following components by weight: 30-80 parts of a ZSM-5 molecular sieve, 20-70 parts of a binder, 0.05-5 parts of an F element, and 0.01-3 parts of a light rare earth element; when the catalyst is used, a fixed bed reaction process is adopted; a catalyst is filled in a fixed bed reactor to form a catalyst bed layer; MTBE is used as a raw material, and under the conditions that the reaction temperature is 400-650 DEG C, the reactionpressure is 0.01-5 MPa and the weight space velocity of MTBE is 1-10 h, MTBE is subjected to MTBE conversion through the catalyst bed layer to prepare propylene and ethylene. The catalyst adopting the scheme has the advantages of high MTBE conversion rate, high diene yield and high stability, and can effectively solve the problems of single MTBE chemical utilization path, low effective utilization rate and low carbon