Thermal and Catalytic Degradation Kinetics of High-Density Polyethylene Over NaX Nano-Zeolite

  • Ammar S. Abbas
  • Marwa G. Saber
Keywords: Thermal degradation, HDPE, NaX Zeolite, TGA, Coats and Redfern, kinetic analysis.

Abstract

Thermal and catalytic pyrolysis of waste plastics in an inert atmosphere has been regarded as a creative method, since pyrolysis can convert plastics waste into hydrocarbons that can be used either as fuels or as a source of chemicals.

Natural Iraqi kaolin clay was used to synthesis the NaX nano- zeolite by hydrothermal conditions with average particle size equal to 77.63nm.Thermal decomposition kinetics of high-density polyethylene (HDPE) in the absence and presence of catalysts nano NaX Zeolite was investigated. Thermal and catalytic degradation of HDPE was performed using a thermogravimetric analyzer in nitrogen atmosphere under non-isothermal conditions 4, 7 and 10 °C/min heating rates were employed in thermogravimetric analysis (TGA) experiments.

First-order decomposition reaction was assumed, and for the kinetic analysis Coats and Redfern (CR) method was used. The apparent activation energy (Ea) was evaluated. Results showed that the NaX nano-zeolite decreases the activation energy (Ea) of HDPE pyrolysis further than the thermal pyrolysis.

Published
2016-09-30
How to Cite
Abbas, A. S., & Saber, M. G. (2016). Thermal and Catalytic Degradation Kinetics of High-Density Polyethylene Over NaX Nano-Zeolite. Iraqi Journal of Chemical and Petroleum Engineering, 17(3), 33-43. Retrieved from https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/211

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