National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan.
National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar, Pakistan.
Bioresour Technol. 2021 May;328:124831. doi: 10.1016/j.biortech.2021.124831. Epub 2021 Feb 10.
The novel Na-SiO@TiO heterogeneous base catalyst was designed and successfully applied to the trans-esterification reaction of waste cooking oil for sustainable biodiesel production. The designed catalyst was characterized by SEM, XPS, FT-IR and BET before treatment, illustrated its suitability for the catalytic trans-esterification reaction. Moreover, the influence of reaction temperature, time, catalyst concentration and WCO:MeOH molar ratio on the catalytic activity were also investigated, resultant 98% biodiesel yield was achieved. The reusability test demonstrated that the Na-SiO@TiO catalyst has noticeable catalytic potency up to 5 successive runs. Besides, the kinetics study explains that the reaction is kinetically controlled by pseudo 1st order. The Ea was found to be 21.65 kJ/mol. Similarly, the important thermodynamic parameters such as ΔH, ΔS and ΔG were estimated to be 18.52 kJ.mol, -219.17 J.molKand 92.59 kJ.molrespectively.
新型 Na-SiO@TiO 异质基催化剂被设计并成功应用于废食用油的酯交换反应，以可持续生产生物柴油。设计的催化剂在处理前通过 SEM、XPS、FT-IR 和 BET 进行了表征，说明其适合催化酯交换反应。此外，还考察了反应温度、时间、催化剂浓度和 WCO:MeOH 摩尔比对催化活性的影响，得到了 98%的生物柴油产率。重复使用测试表明，Na-SiO@TiO 催化剂在 5 次连续使用中具有显著的催化活性。此外，动力学研究表明反应受拟一级动力学控制。Ea 被发现为 21.65 kJ/mol。同样，估计了重要的热力学参数，如 ΔH、ΔS 和 ΔG，分别为 18.52 kJ/mol、-219.17 J/mol K 和 92.59 kJ/mol。
