Pore structure of pyrolyzed scrap tires

Koreňová, Z.; Haydary, Juma; Annus, J.; Markoš, Jozef; Jelemenský, Ľudovít

doi:10.2478/s11696-007-0083-7

Cited by 7 publications

(1 citation statement)

References 40 publications

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“…Compared to the commercial carbon black, denoted N220 (114–124 m 2 ·g −1 ), N330 (78–88 m 2 ·g −1 ), N550 (38–46 m 2 ·g −1 ), and N660 (30–40 m 2 ·g −1 ) [ 27 ], the specific surface area of the produced CBp is similar to N330 and higher than N550 and N660. On the other hand, the specific surface of CBa is six times higher than all the mentioned types of commercial carbon black.…”

Section: Resultsmentioning

confidence: 99%

A Case Study of Waste Scrap Tyre-Derived Carbon Black Tested for Nitrogen, Carbon Dioxide, and Cyclohexane Adsorption

et al. 2020

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Waste scrap tyres were thermally decomposed at the temperature of 600 °C and heating rate of 10 °C·min−1. Decomposition was followed by the TG analysis. The resulting pyrolytic carbon black was chemically activated by a KOH solution at 800 °C. Activated and non-activated carbon black were investigated using high pressure thermogravimetry, where adsorption isotherms of N2, CO2, and cyclohexane were determined. Isotherms were determined over a wide range of pressure, 0.03–4.5 MPa for N2 and 0.03–2 MPa for CO2. In non-activated carbon black, for the same pressure and temperature, a five times greater gas uptake of CO2 than N2 was determined. Contrary to non-activated carbon black, activated carbon black showed improved textural properties with a well-developed irregular mesoporous-macroporous structure with a significant amount of micropores. The sorption capacity of pyrolytic carbon black was also increased by activation. The uptake of CO2 was three times and for cyclohexane ten times higher in activated carbon black than in the non-activated one. Specific surface areas evaluated from linearized forms of Langmuir isotherm and the BET isotherm revealed that for both methods, the values are comparable for non-activated carbon black measured by CO2 and for activated carbon black measured by cyclohexane. It was found out that the N2 sorption capacity of carbon black depends only on its specific surface area size, contrary to CO2 sorption capacity, which is affected by both the size of specific surface area and the nature of carbon black.

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Section: Resultsmentioning

confidence: 99%