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Preparation and kinetic study of magnetic Ca/Fe3O4@SiO2 nanocatalysts for biodiesel production

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  • Feyzi, Mostafa
  • Norouzi, Leila

Abstract

The novel magnetic Ca/Fe3O4@SiO2 nanocatalysts were prepared via combination of sol-gel and incipient wetness impregnation methods for biodiesel production. This research investigates the effect of different Ca/(Fe3O4@SiO2) weight percentage on the catalytic performance. The best operational conditions were the CH3OH/oil = 15/1 at 65 °C with mechanical stirring for 5 h. Furthermore, the optimal nano catalyst showed high catalytic activity for biodiesel production and the biodiesel yield reached 97% under the optimal conditions. From the TPD results, the high basicity of catalysts enabled high yield of biodiesel was obtained. The catalyst could be recovered simply by using an external magnetic field and reused several times without appreciable loss of its catalytic activity. From the kinetic and thermodynamic studes, Ea = 47.03 kJ, A = 1.9 × 10 5 min−1, ΔH = 112.56 kJ mol−1 and ΔS = 298.63 J mol−1 K−1 were obtained. Characterization of catalysts was carried out by using scanning electron microscopy (SEM), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), temperature programmed desorption (TPD), Transmission electron microscopy (TEM), thermogravimetric analysis (TGA), differential thermogravimetric analysis (DTA), Fourier transform-infrared spectroscopy (FT-IR) and N2 adsorption–desorption measurement methods.

Suggested Citation

  • Feyzi, Mostafa & Norouzi, Leila, 2016. "Preparation and kinetic study of magnetic Ca/Fe3O4@SiO2 nanocatalysts for biodiesel production," Renewable Energy, Elsevier, vol. 94(C), pages 579-586.
    • Handle: RePEc:eee:renene:v:94:y:2016:i:c:p:579-586
    DOI: 10.1016/j.renene.2016.03.086
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    1. Nahas, Lea & Dahdah, Eliane & Aouad, Samer & El Khoury, Bilal & Gennequin, Cedric & Abi Aad, Edmond & Estephane, Jane, 2023. "Highly efficient scallop seashell-derived catalyst for biodiesel production from sunflower and waste cooking oils: Reaction kinetics and effect of calcination temperature studies," Renewable Energy, Elsevier, vol. 202(C), pages 1086-1095.
    2. Torkzaban, Sama & Feyzi, Mostafa & norouzi, Leila, 2022. "A novel robust CaO/ZnFe2O4 hollow magnetic microspheres heterogenous catalyst for synthesis biodiesel from waste frying sunflower oil," Renewable Energy, Elsevier, vol. 200(C), pages 996-1007.
    3. Pascoal, C.V.P. & Oliveira, A.L.L. & Figueiredo, D.D. & Assunção, J.C.C., 2020. "Optimization and kinetic study of ultrasonic-mediated in situ transesterification for biodiesel production from the almonds of Syagrus cearensis," Renewable Energy, Elsevier, vol. 147(P1), pages 1815-1824.
    4. Harsha Hebbar, H.R. & Math, M.C. & Yatish, K.V., 2018. "Optimization and kinetic study of CaO nano-particles catalyzed biodiesel production from Bombax ceiba oil," Energy, Elsevier, vol. 143(C), pages 25-34.
    5. Yatish, K.V. & Lalithamba, H.S. & Suresh, R. & Latha, H.K.E., 2020. "Ochrocarpus longifolius assisted green synthesis of CaTiO3 nanoparticle for biodiesel production and its kinetic study," Renewable Energy, Elsevier, vol. 147(P1), pages 310-321.
    6. Yatish, K.V. & Prakash, R. Mithun & Ningaraju, C. & Sakar, M. & GeethaBalakrishna, R. & Lalithamba, H.S., 2021. "Terminalia chebula as a novel green source for the synthesis of copper oxide nanoparticles and as feedstock for biodiesel production and its application on diesel engine," Energy, Elsevier, vol. 215(PB).
    7. Wang, Xiao-Man & Zeng, Ya-Nan & Wang, Yu-Ran & Wang, Fu-Ping & Wang, Yi-Tong & Li, Jun-Guo & Ji, Rui & Kang, Le-Le & Yu, Qing & Liu, Tian-Ji & Fang, Zhen, 2023. "A novel strategy for efficient biodiesel production: Optimization, prediction, and mechanism," Renewable Energy, Elsevier, vol. 207(C), pages 385-397.
    8. Borah, Manash Jyoti & Devi, Anuchaya & Borah, Raju & Deka, Dhanapati, 2019. "Synthesis and application of Co doped ZnO as heterogeneous nanocatalyst for biodiesel production from non-edible oil," Renewable Energy, Elsevier, vol. 133(C), pages 512-519.
    9. Krishnamurthy, K.N. & Sridhara, S.N. & Ananda Kumar, C.S., 2020. "Optimization and kinetic study of biodiesel production from Hydnocarpus wightiana oil and dairy waste scum using snail shell CaO nano catalyst," Renewable Energy, Elsevier, vol. 146(C), pages 280-296.
    10. Wang, Tianyu & Ma, Xiaoling & Bingwa, Ndzondelelo & Yu, Hao & Wang, Yunpu & Li, Guoning & Guo, Min & Xiao, Qiangqiang & Li, Shijie & Zhao, Xudong & Li, Hui, 2024. "A novel bimetallic CaFe-MOF derivative for transesterification: Catalytic performance, characterization, and stability," Energy, Elsevier, vol. 292(C).
    11. Xie, Wenlei & Li, Jiangbo, 2023. "Magnetic solid catalysts for sustainable and cleaner biodiesel production: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 171(C).
    12. Lani, Nurul Saadiah & Ngadi, Norzita & Haron, Saharudin & Mohammed Inuwa, Ibrahim & Anako Opotu, Lawal, 2024. "The catalytic effect of calcium oxide and magnetite loading on magnetically supported calcium oxide-zeolite catalyst for biodiesel production from used cooking oil," Renewable Energy, Elsevier, vol. 222(C).

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