Journal of Thermal Analysis and Calorimetry

, Volume 139, Issue 2, pp 1025–1036 | Cite as

Non-isothermal pyrolysis of used lubricating oil and the catalytic effect of carbon-based nanomaterials on the process performance

  • Seyed Emadeddin Alavi
  • Mohammad Ali AbdoliEmail author
  • Farhad Khorasheh
  • Abdolmajid Bayandori Moghaddam


Pyrolysis is a commonly used method for the recovery of used lubricating oil (ULO), which should be kinetically improved by a catalyst, due to its high level of energy consumption. In this research, the catalytic effects of carbon nanotube (CNT) and graphene nanoplatelets on the pyrolysis of ULO were studied through thermogravimetric analysis. First, the kinetic parameters of ULO pyrolysis including activation energy were calculated to be 170.12 and 167.01 kJ mol−1 by FWO and KAS methods, respectively. Then, the catalytic effects of CNT and graphene nanoplatelets on pyrolysis kinetics were studied. While CNT had a negligible effect on the pyrolysis process, graphene nanoplatelets significantly reduced the temperature of maximum conversion during pyrolysis from 400 to 350 °C, due to high thermal conductivity and homogenous heat transfer in the pyrolysis process. On the other hand, graphene nanoplatelets maximized the rate of conversion of highly volatile components at lower temperatures (< 100 °C), which was mainly due to the high affinity of these components toward graphene nanoplatelets and also the effect of nanoplatelets’ edges which have free tails and can bond with other molecules. Moreover, graphene nanoplatelets decreased the activation energy of the conversion to 154.48 and 152.13 kJ mol−1 by FWO and KAS methods, respectively.


Thermogravimetric analysis Used lubricating oil Carbon nanotube Graphene nanoplatelets Kinetics 



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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Seyed Emadeddin Alavi
    • 1
  • Mohammad Ali Abdoli
    • 1
    Email author
  • Farhad Khorasheh
    • 2
  • Abdolmajid Bayandori Moghaddam
    • 3
  1. 1.School of Environment, College of EngineeringUniversity of TehranTehranIran
  2. 2.Department of Chemical and Petroleum EngineeringSharif University of TechnologyTehranIran
  3. 3.School of Engineering Science, College of EngineeringUniversity of TehranTehranIran

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