Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies
Due to the superior catalytic property of calcium oxide in biodiesel production via transesterification, it is necessary to modify such catalyst to retain the catalytic property while overcoming the disadvantages related to the catalyst application in the process. The present study focused on the ki...
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| Format: | Article |
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Elsevier Ltd
2018
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| _version_ | 1796864191020138496 |
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| author | Yahya, Noor Yahida Ngadi, Norzita Wong, Syieluing Hassan, Onn |
| author_facet | Yahya, Noor Yahida Ngadi, Norzita Wong, Syieluing Hassan, Onn |
| author_sort | Yahya, Noor Yahida |
| collection | ePrints |
| description | Due to the superior catalytic property of calcium oxide in biodiesel production via transesterification, it is necessary to modify such catalyst to retain the catalytic property while overcoming the disadvantages related to the catalyst application in the process. The present study focused on the kinetic and thermodynamic studies on the transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate (MCT). The experiments were performed at room temperature, 65 °C, and 100 °C. Among the various models being studied, the Pseudo First order is the best model to describe the reaction kinetic. Data analysis showed that the rate constants, k, varied in the range of 0.0233–0.058 s−1, while the activation energy, Ea was determined to be 21.25 kJ·mol−1. The following parameters were also obtained: −24 kJ·mol−1 for enthalpy (ΔH), −0.16 kJ·mol−1.K−1 for entropy (ΔS) and 25.62–35.70 kJ·mol−1 for Gibb's free energy (ΔG). The results showed that the reaction was exothermic (ΔH < 0), and that the biodiesel oxidation reaction is non-spontaneous and endergonic in nature (ΔG > 0). This study demonstrates the potential of MCT catalyst in promoting the conversion UCO into biodiesel with high quality fuel properties. |
| first_indexed | 2024-03-05T20:38:10Z |
| format | Article |
| id | utm.eprints-86176 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:38:10Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
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| spelling | utm.eprints-861762020-08-30T09:05:04Z http://eprints.utm.my/86176/ Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies Yahya, Noor Yahida Ngadi, Norzita Wong, Syieluing Hassan, Onn TP Chemical technology Due to the superior catalytic property of calcium oxide in biodiesel production via transesterification, it is necessary to modify such catalyst to retain the catalytic property while overcoming the disadvantages related to the catalyst application in the process. The present study focused on the kinetic and thermodynamic studies on the transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate (MCT). The experiments were performed at room temperature, 65 °C, and 100 °C. Among the various models being studied, the Pseudo First order is the best model to describe the reaction kinetic. Data analysis showed that the rate constants, k, varied in the range of 0.0233–0.058 s−1, while the activation energy, Ea was determined to be 21.25 kJ·mol−1. The following parameters were also obtained: −24 kJ·mol−1 for enthalpy (ΔH), −0.16 kJ·mol−1.K−1 for entropy (ΔS) and 25.62–35.70 kJ·mol−1 for Gibb's free energy (ΔG). The results showed that the reaction was exothermic (ΔH < 0), and that the biodiesel oxidation reaction is non-spontaneous and endergonic in nature (ΔG > 0). This study demonstrates the potential of MCT catalyst in promoting the conversion UCO into biodiesel with high quality fuel properties. Elsevier Ltd 2018-05 Article PeerReviewed Yahya, Noor Yahida and Ngadi, Norzita and Wong, Syieluing and Hassan, Onn (2018) Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies. Energy Conversion and Management, 164 . pp. 210-218. ISSN 0196-8904 http://dx.doi.org/10.1016/j.enconman.2018.03.011 |
| spellingShingle | TP Chemical technology Yahya, Noor Yahida Ngadi, Norzita Wong, Syieluing Hassan, Onn Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title | Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title_full | Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title_fullStr | Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title_full_unstemmed | Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title_short | Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies |
| title_sort | transesterification of used cooking oil uco catalyzed by mesoporous calcium titanate kinetic and thermodynamic studies |
| topic | TP Chemical technology |
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