A ZSM-5 base is used to produce light olefi ns in the process of converting ethylene to propylene, as well as Ni-W/ZSM-5 to improve the catalyst. After loading the Ni-W/ZSM-5 0.5,1,2 wt % by inoculation, the modifi ed catalyst was investigated for accurate determination of the specifi cation by SEM, BET, FTIR analyzes. The activity of this catalyst was evaluated in the process of ethylene to propylene conversion in a constant reactor under operational conditions (temperature 400°C, pressure 1 atm, and feed fl ow rate of 0.5 cm3/min of pure ethylene), which also shows the results of tests of catalyst activity evaluation. The selectivity of ethylene and propylene over the modifi ed catalyst will increase as the temperature rises and the maximum selectivity will be achieved at 400°C. The catalyst with 0.5 wt % Ni/ZSM-5 has the highest conversion rate and better selectivity than that with other percentages, also the catalyst with 2 wt % Ni-W/ZSM-5 has the highest conversion rate and better selectivity than other percentages.
کلید واژگان :ethylene, propylene, fi xed-bed reactor, catalyst ZSM-5, modifi ed catalyst, Ni-W/ZSM-5
ارزش ریالی : 600000 ریال
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