Abstract
Metal oxides as Ca(OH)2, NiO, Fe2O3 or TiO2 showed different effects on the pyrolysis of PET. The experiments were carried out at 700 °C in a helium atmosphere using a laboratory equipment. Ca(OH)2 led to the hydrolysis of the PET and the following decarboxylation of the resulting terephthalic acid to benzene in a high amount up to 31 wt.%. By this means a yield of 77% related to the terephthalic acid content in the PET. The addition of Fe2O 3 led to a similar but weaker effect. Nickel oxide showed less influence on the pyrolysis products of PET. With titanium dioxide considerably less gaseous products were obtained. When a mixture of Ca(OH)2 and NiO was used PET was converted to synthesis-gas with a high hydrogen and carbon monoxide content and a gas amount of about 70%. The experiments with mixtures of Fe2O3 or TiO2 with Ca(OH)2 showed little differences to the experiments with pure Ca(OH)2.
Original language | English |
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Pages (from-to) | 139-144 |
Number of pages | 6 |
Journal | Journal of Analytical and Applied Pyrolysis |
Volume | 73 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2005 Mar |
Keywords
- Benzene
- Calcium hydroxide
- Feedstock recycling
- Iron(III) oxide
- Nickel oxide
- Poly(ethylene terephthalate) (PET)
- Pyrolysis
- Titanium dioxide
ASJC Scopus subject areas
- Analytical Chemistry
- Fuel Technology