Biodiesel synthesis from Pongamia Pinnata oil over modified CeO2 catalysts

Sathgatta Zaheeruddin Mohamed Shamshuddin; Venkatesh --; Manjunatha Shyamsundar; Vanagoor Thammannigowda Vasanth

doi:10.29356/jmcs.v58i4.46

Biodiesel synthesis from Pongamia Pinnata oil over modified CeO2 catalysts

Authors

Sathgatta Zaheeruddin Mohamed Shamshuddin HMS Institute of Technology Bharathiar University
Venkatesh -- HMS Institute of Technology Bharathiar University
Manjunatha Shyamsundar HMS Institute of Technology Bharathiar University
Vanagoor Thammannigowda Vasanth HMS Institute of Technology

DOI:

https://doi.org/10.29356/jmcs.v58i4.46

Keywords:

Biodiesel, Transesterification, Pongamia pinnata oil, modified CeO2, CeO2-ZrO2, MgO

Abstract

This study investigates the use of CeO₂, ZrO₂, MgO and CeO₂-ZrO₂, CeO₂-MgO, CeO₂-ZrO₂-MgO mixed oxides as solid base catalysts for the transesterification of Pongamia Pinnata oil with methanol to produce biodiesel. SO₄^2-/CeO₂and SO₄^2-/CeO₂-ZrO₂ were also prepared and used as solid acid catalysts for esterification of Pongamia pinnata oil (P-oil) to reduce the % of free fatty acid (FFA) in P-oil. These oxide catalysts were prepared by an incipient wetness impregnation method and characterized by techniques such as NH₃-TPD for surface acidity, CO₂-TPD for surface basicity and powder X-ray diffraction for crystalinity. The effect of nature of the catalyst, methanol to P-oil molar ratio and reaction time in esterification as well as in transesterification was investigated. The catalytic materials were reactivated & reused for five reaction cycles and the results showed that the ceria based catalysts have reasonably good reusability both in esterification and transesterification reaction. The test results also revealed that the CeO₂-ZrO₂ modified with MgO could have potential for use in the large scale biodiesel production.

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Author Biographies

Sathgatta Zaheeruddin Mohamed Shamshuddin, HMS Institute of Technology Bharathiar University

Chemistry Research Laboratory

Research and Development Center

Venkatesh --, HMS Institute of Technology Bharathiar University

Chemistry Research Laboratory

Research and Development Center

Manjunatha Shyamsundar, HMS Institute of Technology Bharathiar University

Chemistry Research Laboratory

Research and Development Center

Vanagoor Thammannigowda Vasanth, HMS Institute of Technology

Chemistry Research Laboratory

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