کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5202162 | 1381890 | 2013 | 8 صفحه PDF | دانلود رایگان |
In the present study, the catalytic conversion of high density polyethylene (HDPE) to useful products has been investigated in the presence of BaTiO3 based catalysts in a micro steel reactor at 350 °C and 30 min reaction time. The catalysts, including BaTiO3, Pb/BaTiO3, Co/BaTiO3 and Pb-Co/BaTiO3 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 (C6 - >C30) & hydrocarbon group types (paraffin's, olefins, naphthenics, and aromatics). Among the catalysts used, Pb-Co/BaTiO3 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. C6-C12, C13-C16, C17-C20 and C20-C30. Inversely, the un-doped BaTiO3, favored the formation of C6-C12 and C13-C16 range hydrocarbons, whereas Pb doped BaTiO3 and Co doped BaTiO3 enhanced the yield of C13-C16, and C20-C30 range hydrocarbons. Regarding the hydrocarbon group types, all catalysts significantly increased the formation of paraffins and reduced olefins and naphthenes.
Journal: Polymer Degradation and Stability - Volume 98, Issue 12, December 2013, Pages 2512-2519