جداسازي تركيب هاي گوگردي از بنزين به وسيله ي نانولوله هاي كربني

Sulfur Components Removal from Gasoline by Carbon Nanotubes

: A study on the removal of sulfur components from gasoline by carbon nanotubes for use as support in catalysis was conducted in batch conditions. Kinetic data and equilibrium removal isotherms were obtained. The influence of different experimental parameters such as contact time, initial concentration of sulfur components, catalyst mass and temperature on the kinetics of sulfur components removal was studied. Results showed that the main parameters that played an important role in removal phenomena were initial sulfur components concentration and catalyst mass. The necessary time to reach equilibrium was between 7 and 11 hours depend on the initial concentration of sulfur components. We used differential and integral method for computing rate equation. Equation order that was computed from these two methods is 2.85 and there isnʹt many difference is changing in different temperature. Temperature changes in the range of -2-40 °C (for solution with initial concentration of 1000 ppm, removal yield changed from 76 % to 81 %) increased removal of sulfur components. Sulfur components uptake of carbon nanotube catalyst supported was quantitatively evaluated using adsorption isotherms. Results indicate that the Longmuir model fits better with experimental data in comparison with Freundlich equation.