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Chemical Recycling of Used Motor Oil by Catalytic Cracking with Metal-Doped Aluminum Silicate Catalysts

Author

Listed:
  • Daniela Almeida Streitwieser

    (Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Av. Interoceánica, Quito 170157, Ecuador
    Faculty Life Sciences, Reutlingen University, Alteburgstr. 150, 72762 Reutlingen, Germany)

  • Arturo Arteaga

    (Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Av. Interoceánica, Quito 170157, Ecuador)

  • Alvaro Gallo-Cordova

    (Department of Nanoscience and Nanotechnology, Instituto de Ciencia de Materiales de Madrid, ICMM/CSIC, C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain)

  • Alexis Hidrobo

    (Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Av. Interoceánica, Quito 170157, Ecuador)

  • Sebastian Ponce

    (Department of Chemical Engineering, Universidad San Francisco de Quito USFQ, Diego de Robles s/n y Av. Interoceánica, Quito 170157, Ecuador)

Abstract

The chemical recycling of used motor oil via catalytic cracking to convert it into secondary diesel-like fuels is a sustainable and technically attractive solution for managing environmental concerns associated with traditional disposal. In this context, this study was conducted to screen basic and acidic-aluminum silicate catalysts doped with different metals, including Mg, Zn, Cu, and Ni. The catalysts were thoroughly characterized using various techniques such as N 2 adsorption–desorption isotherms, FT-IR spectroscopy, and TG analysis. The liquid and gaseous products were identified using GC, and their characteristics were compared with acceptable ranges from ASTM characterization methods for diesel fuel. The results showed that metal doping improved the performance of the catalysts, resulting in higher conversion rates of up to 65%, compared to thermal (15%) and aluminum silicates (≈20%). Among all catalysts, basic aluminum silicates doped with Ni showed the best catalytic performance, with conversions and yields three times higher than aluminum silicate catalysts. These findings significantly contribute to developing efficient and eco-friendly processes for the chemical recycling of used motor oil. This study highlights the potential of basic aluminum silicates doped with Ni as a promising catalyst for catalytic cracking and encourages further research in this area.

Suggested Citation

  • Daniela Almeida Streitwieser & Arturo Arteaga & Alvaro Gallo-Cordova & Alexis Hidrobo & Sebastian Ponce, 2023. "Chemical Recycling of Used Motor Oil by Catalytic Cracking with Metal-Doped Aluminum Silicate Catalysts," Sustainability, MDPI, vol. 15(13), pages 1-13, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:13:p:10522-:d:1186497
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    References listed on IDEAS

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    1. Siddiqi, Hammad & Kumari, Usha & Biswas, Subrata & Mishra, Asmita & Meikap, B.C., 2020. "A synergistic study of reaction kinetics and heat transfer with multi-component modelling approach for the pyrolysis of biomass waste," Energy, Elsevier, vol. 204(C).
    2. Mishra, Asmita & Siddiqi, Hammad & Kumari, Usha & Behera, Ipsita Dipamitra & Mukherjee, Subhrajit & Meikap, B.C., 2021. "Pyrolysis of waste lubricating oil/waste motor oil to generate high-grade fuel oil: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
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