Thermal and Catalytic Degradation Kinetics of High-Density Polyethylene Over NaX Nano-Zeolite | ||
| Iraqi Journal of Chemical and Petroleum Engineering | ||
| Article 1, Volume 17, Issue 3, September 2016, Pages 33-43 | ||
| Authors | ||
| Ammar S. Abbas; Marwa G. Saber | ||
| 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. | ||
| Keywords | ||
| Thermal degradation; HDPE; NaX Zeolite; TGA; Coats and Redfern; kinetic analysis | ||
|
Statistics Article View: 112 PDF Download: 27 |
||