Abstract
Waste scrap tyres were thermally decomposed under various conditions. Decompositions were followed by the TGA method. Specific heating regimes were tested to obtain optimal structural properties of resulting pyrolytic carbon black produced by pyrolysis of scrap tyres and the process was characterized in temperature interval from 380 to 1,200 °C and heating rate 10, 20 and 50 °C min−1 under nitrogen atmosphere. The original scrap tyres and pyrolytic carbon black were characterized by Raman and Fourier transform infrared spectroscopy methods. Textural properties were also determined. Effect of temperature and heating rate on process of pyrolysis of scrap tyres was observed. Shifting of temperature of maximum pyrolysis rate to lower value and spreading of DTG peak is caused by increasing heating rate. Temperature 570 °C was sufficient for total scrap tyres pyrolysis. Graphitic and disordered structure was distinguished in the formed carbon black by Raman spectroscopy. With increasing temperature, heating rate and weight loss, the amount of the graphitic structure was reduced at the expense of disordered structure. Destruction of nonporous scrap tyres and formation of porous structure took place at higher temperature. Porous carbon black is formed above 380 °C, specific surface area increased up to 88 m2 g−1 .
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Acknowledgements
This study has been done in connection with the Grant Agency of Czech Republic—grant project No. P106/10/P267, No. 104/09/0972 and project Institute of clean technologies for mining and utilization of raw materials for energy use, reg. No. CZ.1.05/2.1.00/03.0082 supported by Research and Development for Innovations Operational Programme financed by Structural Founds of Europe Union and from the means of state budget of the Czech Republic.
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Mikulova, Z., Sedenkova, I., Matejova, L. et al. Study of carbon black obtained by pyrolysis of waste scrap tyres. J Therm Anal Calorim 111, 1475–1481 (2013). https://doi.org/10.1007/s10973-012-2340-4
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DOI: https://doi.org/10.1007/s10973-012-2340-4