Polyethylene terephthalate (PET), a thermoplastic polymer, is the main raw material in the manufacturing of clear bottles used mainly for water and soft drinks. In 2022, the world plastics production was 400.3 million tons; around 6.2 % corresponds to PET, and only 10 % of it is recycled. PET waste can only be recycled four times because high temperatures generate chemical and physical degradation. This study aims to apply the principles of circular economy to transform PET waste into crude oil through fast catalytic pyrolysis, under N2 atmosphere at different temperatures and with different quantities of zeolite as a catalyst. The crude oil was characterized by Fourier-transform infrared spectroscopy (FTIR) and solution quantitative 13C nuclear magnetic resonance (13C NMR). To compare the test results, a simulation for the pyrolysis reactor was conducted with CHEMCAD softwar...