Catalytic reforming represents one of the most significant processes in the oil industry. It enables the production of gasoline in quantities high enough to satisfy the market demands. At the Rijeka Oil Refinery, a modification of the Platforming 2 complex had been carried out in 1984, which enabled production at considerably lower working pressure (up to 17 bar in the high-pressure separator). Lower working pressure leads to higher hydrogen and reformate yield, but also to increased coking of the catalyst. Experimental analyses of the low-octane gasoline and reformate gasoline were performed at the Rijeka Oil Refinery laboratories. The analyses included: measurement of density, distillation curves, total sulphur, nitrogen, water, paraffin, olefin, naphthene, aromatic, lead and mercury content. The second part of the thesis required the monitoring of process parameters, such as: pressure in high-pressure section, reactor entrance temperature, hydrogen/hxdrocarbons ratio (H2/CH) quotient, etc. Through the optimization of process parameters, it was determined that the pressure in high-pressure section does not influence the value of research octane number (RON). Instead, RON was dependant on the reactor entrance temperature, as well as the capacity of the complex. Higher pressure in the high-pressure section signifies increased hydrogen purity, which in turn leads to lower coke formation, while the H2/CH ratio remains the same, along with the hydrogen and reformate yield