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Bentonite has been modified using H2SO4 at various concentrations to alter the Si/Al ratio that is responsible for catalytic pyrolysis of waste polyethylene. The XRF analysis confirmed a gradual decrease of Al2O3 content with an increasing concentration of H2SO4. The highest liquid hydrocarbon yield (87.48 %) was obtained at a Si/Al ratio of 34.24. To further activate acid‐modified bentonite, bimetals...