Kinetic and thermodynamic of heterogeneously K3PO4/AC-catalysed transesterification via pseudo-first order mechanism and Eyring-Polanyi equation

FUEL

卷:232

Article

Farid, Mohammed Abdillah Ahmad¹  Hassan, Mohd Ali^1,2  Taufiq-Yap, Yun Hin^3,4  Ibrahim, Mohd Lokman⁵  Hasan, Muhamad Yusuf^2,7  Ali, Ahmad Amiruddin Mohd¹  Othman, Mohd Ridzuan¹  Shirai, Yoshihito⁶ 

[1] Univ Putra Malaysia, Fac Biotechnol & Biomol Sci, Dept Bioproc Technol, Upm Serdang 43400, Selangor, Malaysia

[2] Univ Putra Malaysia, Fac Engn, Dept Proc & Food Engn, Upm Serdang 43400, Selangor, Malaysia

[3] Univ Putra Malaysia, Fac Sci, Dept Chem, Upm Serdang 43400, Selangor, Malaysia

[4] Univ Putra Malaysia, Fac Sci, Catalysis Sci & Technol Res Ctr PutraCAT, Upm Serdang 43400, Selangor, Malaysia

[5] Univ Teknol MARA, Sch Chem & Environm, Fac Sci Appl, Shah Alam 40450, Selangor, Malaysia

[6] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Wakamatsu Ku, 808-0196 Hibikino 2-4, Kitakyushu, Fukuoka, Japan

[7] Univ Kuala Lumpur, Malaysian Inst Chem & Bioengn Technol, Sect Bioengn Technol, Alor Gajah, Malaysia

关键词: Carbon-based catalyst;    Pseudo-first order;    Eyring-Polanyi equation;    Kinetic and thermodynamic;    Heterogeneous reaction;    Biodiesel;   

DOI  :  10.1016/j.fuel.2018.06.029

来源: Elsevier

【 摘 要 】

The use of carbon-based catalysts has drawn so much interest in biodiesel production due to improved reaction performance. However, there was lack of comprehensive studies in term of its kinetic and thermodynamic perspective. Therefore, a methodical study is essential to uncover the influence of the carbon catalyst with respect to reaction rate and yield. This study represents kinetic and thermodynamic of heterogeneously K3PO4/AC-catalysed transesterification. It was done correspondingly via pseudo-first order mechanism and Eyring-Polanyi equation, whereby, under the optimal reaction temperature of 333.15 K, all data have fitted satisfactorily in both models with resulted R-2 of 0.99, respectively. Activation energy (E-a) and Gibbs free energy (Delta G) were calculated as 34.2 kJ mol(-1) and -33.68 kJ mol(-1), indicating the reaction was exergonic and spontaneous at high temperature.

【 授权许可】

Free