Study on the adsorption and reaction performance of Fe/ZSM-5 catalyst on catalytic reduction of NOx with propylene
نویسنده
چکیده
The adsorption performance of Fe/ZSM-5 catalyst has been investigated in the SCR of NOx with propylene as the reducing agent. Freudlich equation was found to fit the adsorption isotherm satisfactorily if the system dispersion is considered. Fe/ZSM-5 catalyst showed reasonable NO adsorption capacity. The study on the influence of reaction temperature, gas space velocity and gas composition on the Fe/ZSM-5 catalyst activity showed that, at T=350C and GHSV=5000h, the catalyst exhibited acceptable activity when O2 concentration was controlled at some low level (≤1%) and HC to NO molar ratio was kept on a reasonable ratio of about 2:1. Those performance data may be used for design the operating conditions of a newly proposed dual-zone continuous reactor for catalytic reduction of NOx under lean operating conditions.
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