Simulation and Mathematical Representation of N-Octane Aromatization on Ge-Re-Pt/Al2O3, Cs-Pt/ Al2O3,Re-Pt/ Al2O3 Catalysts

Abstract

In the present study mathematical representation was used to predict the reaction kinetics of the n-octane aromatization which tested with three types of catalysts by adding (Ge, Cs, and Re ) in order to improves the catalytic properties (enhanced the activity) of Pt/Al2O3 catalyst for n-octane aromatization. The aromatization process carried out in the range of reaction temperature varying from (425 to 500 °C) and weight hour space velocity varied from (0.6 to 1.2 hr-1) with hydrogen as the carrier gas at atmospheric pressure. The results showed that the higher conversion of n-octane aromatization increased with temperature increasing but at temperature higher than (500 °C) hydrocracking reaction is promoted. Whereas the effect of weight hourly space velocity has shown inverse impact on conversion. On the other hand the yield of aromatic increase especially benzene and toluene which produce as secondary products from the hydrogenolysis of A8 for three types of catalysts using in the process under the same operating condition. The simulation results of the model based on proposed kinetic model was compared with the experimental results. The comparison between the predicted and commercially results shows a good agreement with error% between (6.91 – 17.87).

Keywords

• simulation
• aromatization
• octane