关键词: ZSM-5, 复合分子筛, FCC汽油, 降烯烃

Abstract: The effects of reaction conditions on the olefin reduction of gasoline over ZSM-5/MCM-41 composite molecular sieve prepared by nano-assembling method were investigated on a continuous micro-reactor unit with pressure using FCC gasoline as feed. By analyzing the influences of various reaction temperature, pressure and WHSV on the liquid yield, coke yield and the group compositions of product, the optimum conditions were obtained as follows: a reaction temperature of 673 K, a reaction pressure of 2 MPa and a WHSV of 3.0 h-1. The performance of ZSM-5/MCM-41 during various reaction times was also evaluated. Results indicated that the deactivation of composite molecular sieve was mainly due to the formation of coke, however, this composite molecular sieve exhibited good regeneration performance.

Key words: ZSM-5, composite molecular sieve, FCC gasoline, olefin reduction