کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7158675 | 1462798 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transesterification of used cooking oil (UCO) catalyzed by mesoporous calcium titanate: Kinetic and thermodynamic studies
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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, 65â¯Â°C, and 100â¯Â°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 0.0233-0.058â¯sâ1, while the activation energy, Ea was determined to be 21.25â¯kJ·molâ1. The following parameters were also obtained: â24â¯kJ·molâ1 for enthalpy (ÎH), â0.16â¯kJ·molâ1.Kâ1 for entropy (ÎS) and 25.62-35.70â¯kJ·molâ1 for Gibb's free energy (ÎG). The results showed that the reaction was exothermic (ÎHâ¯<â¯0), and that the biodiesel oxidation reaction is non-spontaneous and endergonic in nature (ÎGâ¯>â¯0). This study demonstrates the potential of MCT catalyst in promoting the conversion UCO into biodiesel with high quality fuel properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 164, 15 May 2018, Pages 210-218
Journal: Energy Conversion and Management - Volume 164, 15 May 2018, Pages 210-218
نویسندگان
Noor Yahida Yahya, Norzita Ngadi, Syieluing Wong, Onn Hassan,