Influence of waste brick kiln dust on pyrolytic conversion of polypropylene in to potential automotive fuels

•Pyrolysis behavior of polypropylene is presented.•Plain and Fe2O3-impregnated waste brick kiln dust are evaluated as catalysts.•Characterization of the derived liquid oils is discussed.•Fuel properties in comparison with petro-fuels are discussed.

The present study portrays the catalytic pyrolysis of polypropylene over plain and Fe2O3-impregnated waste brick kiln dust (WBKD) into liquid oils of fuel value in comparison with control (thermal) run. The catalysts were duly characterized by scanning electron microscopy (SEM), energy dispersive x-rays (EDX), surface area analysis (SAA) and x-ray diffractometry (XRD) and used in concertation range of 0.5-10%. The yields of the liquid oil as a function of catalyst concentration were studied and the oil obtained in optimum yield (96.70%) at catalyst to polymer ratio of 2.5% were submitted to atmospheric distillation in order to get gasoline (37-180 °C), diesel (180-250 °C) and residue (>250 °C) in comparison with the control/thermal run. The fuel properties of the gasoline and diesel range fractions determined according to ASTM methods showed good conformance with the petro-gasoline and diesel.