Abstract In the present study, the catalytic conversion of high density polyethylene (HDPE) to useful products has been investigated in the presence of BaTiO 3 based catalysts in a micro steel reactor at 350 °C and 30 min reaction time. The catalysts, including BaTiO 3 , Pb/BaTiO 3 , Co/BaTiO 3 and Pb–Co/BaTiO 3 were prepared in the laboratory by reactive calcination method and characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-rays (EDX), Surface Area Analyzer (SAA) and X-rays Diffractometry (XRD). The product yields (over all yields and yields of liquid, gas and coke/residue) as a function of individual catalyst concentration was studied. The result indicated a promising effect of the catalysts used on conversion to liquid products and their composition in term of carbon range (C 6 – >C 30 ) & hydrocarbon group types (paraffin's, olefins, naphthenics, and aromatics). Among the catalysts used, Pb–Co/BaTiO 3 gave the maximum yield of liquid products (86%) when used in 1 wt % loading. The same catalyst gave the average yield (20–25%) of different range hydrocarbons i.e. C 6 –C 12 , C 13 –C 16 , C 17 –C 20 and C 20 –C 30 . Inversely, the un-doped BaTiO 3, favored the formation of C 6 –C 12 and C 13 –C 16 range hydrocarbons, whereas Pb doped BaTiO 3 and Co doped BaTiO 3 enhanced the yield of C 13 –C 16 , and C 20 –C 30 range hydrocarbons. Regarding the hydrocarbon group types, all catalysts significantly increased the formation of paraffins and reduced olefins and naphthenes.