This chapter discusses a facile route to convert waste plastics into high-performance fuel oil using high temperature pyrolysis. There are several products obtained from the catalytic pyrolysis of polypropylene plastics which are carbon nano-materials of different morphologies, wax, oil and gases. A typical gas chromatograph chromatogram diagram for the liquid fraction taken from plastics pyrolysis. Catalytic pyrolysis due to combined impact of pyrolysis and catalytic reforming is shown as a more efficient method for processing large amounts of waste plastics. Waste Polypropylene was collected from Brihanmumbai Municipal Corporation garbage disposal centre. Immediately after collection, WPP were washed, air-dried, and shredded into small pieces prior to pyrolysis in presence of nanosized nickel as catalyst. Liquefied hydrocarbon synthesized from pyrolysis of WPP has 25 ppm of sulfur content which is very less compared to standard fuel oil. Ratio of WPP and catalyst was also found to be vital parameter due to quantity-dependent reaction mechanism of Ni catalyst.