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Pyrolysis of an LDPE-LLDPE-EVA copolymer mixture over various mesoporous catalysts

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Abstract

The aim of the present work was to study the performance of mesoporous catalysts in the catalytic cracking of an LDPE+LLDPE+EVA copolymer. Mesoporous catalysts, including MCM-41, Nano-MCM-41, Al-Nano-MCM-41, MMZ-ZSM-5 and Meso-MFI, were applied for this reaction. Also, microporous HZSM-5 was used for a comparison. All of the catalysts showed higher decomposition abilities than thermal decomposition. The catalytic conversion of the LDPE+LLDPE+EVA copolymer was highest with the use of Meso-MFI due to its pore size and strong Brönsted acidity, with high selectivity for lower olefin and gasoline range hydrocarbon. Both MMZ-ZSM-5 and Al-Nano-MCM-41 have an acid site that induced the decomposition reactions, and thus, produced compounds with lower carbon numbers in liquid products. MCM-41, which exhibits no acidity, showed a similar distribution of liquid products to that via thermal cracking, while Nano-MCM-41 showed better catalytic cracking ability due to its high surface area.

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Authors and Affiliations

  1. Department of Chemical Engineering, Kongju National University, 275 Budae-dong, Seobuk-gu, Cheonan, Chungnam, 331-717, Korea

    Jong-Ki Jeon

  2. School of Environmental Engineering, University of Seoul, Seoul, Korea

    Young-Kwon Park

  3. Graduate School of Energy and Environmental System Engineering, 90 Jeonnong-dong, Dongdaemun-gu, Seoul, 130-743, Korea

    Young-Kwon Park

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  1. Jong-Ki Jeon
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Correspondence to Young-Kwon Park.

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Jeon, JK., Park, YK. Pyrolysis of an LDPE-LLDPE-EVA copolymer mixture over various mesoporous catalysts. Korean J. Chem. Eng. 29, 196–200 (2012). https://doi.org/10.1007/s11814-011-0190-6

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  • DOI: https://doi.org/10.1007/s11814-011-0190-6

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