Abstract
NH4-ZSM-5 is employed for converting dimethyl ether to gasoline (DTG) with the fixed-bed reactor. The lifetime of the catalyst can be extended from 10hours to 197hours and the aromatic content can be decreased from 56.6 vol.% to 30.2 vol.% as H-ZSM-5 replaced by NH4-ZSM-5 for DTG reaction at the experimental conditions of P = 1 atm, T = 300 oC, and WHSV (Weight Hourly Space Velocity) = 6.5 h-1. The durability of NH4-ZSM-5 is performed by the reaction (1 atm/300 oC/WHSV 6.5 h-1) - regeneration (air 0.5 lpm/570 oC/10hrs) cycle test. The product distribution of the DTG with the NH4-ZSM-5 undergone 6 times regeneration is similar to the fresh one. Moreover, the products were analyzed by the in-line GC-MS. The product distribution is similar ether the sample from starting or the sample from the 240hours on stream running at the reaction conditions of P = 1 atm, T = 400 oC, and WHSV = 3.6 h-1.
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