کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5202162 1381890 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalytic efficiency of some novel nanostructured heterogeneous solid catalysts in pyrolysis of HDPE
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Catalytic efficiency of some novel nanostructured heterogeneous solid catalysts in pyrolysis of HDPE
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 98, Issue 12, December 2013, Pages 2512-2519
نویسندگان
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