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首页> 外文期刊>RSC Advances >Ultrasonic-assisted biodiesel production from waste cooking oil over novel sulfonic functionalized carbon spheres derived from cyclodextrin via one-step: a way to produce biodiesel at short reaction time
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Ultrasonic-assisted biodiesel production from waste cooking oil over novel sulfonic functionalized carbon spheres derived from cyclodextrin via one-step: a way to produce biodiesel at short reaction time

机译：通过一步法从废弃的食用油上通过环糊精衍生的新型磺酸官能化碳球超声辅助生产生物柴油：一种在短反应时间内生产生物柴油的方法

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摘要

In this study, a novel sulfonated carbon catalyst was synthesized via the one-step hydrothermal carbonization of cyclodextrin, hydroxyethylsulfonic acid and citric acid. Ultrasonic-assisted biodiesel production from waste cooking oil in the presence of the catalyst was investigated. The novel catalyst was characterized by BET, XRD, PSD, SEM-EDS, TGA, FT-IR, XPS and TPD. The catalyst exhibited a high acidity of up to 1.87 mmol g(-1).2(k) factorial and Box-Behnken designs were applied to find the optimum conditions to obtain a maximum fatty acid methyl ester (FAME) yield. The results of the optimization imply that a catalyst loading of 11.5 wt%, a reaction time of 8.8 min and a reaction temperature of 117 degrees C provide a maximum FAME yield of up to 90.8% in ultrasonic-assisted biodiesel production. The reusability of the catalyst was studied for 4 cycles under the optimum conditions and the results showed that the regenerated catalyst can be reused without any serious reduction of the FAME yield. Kinetic studies showed that the reaction followed first order reaction kinetics with an activation energy of 11.64 kJ mol(-1).
机译：在这项研究中，通过环糊精，羟乙基磺酸和柠檬酸的一步水热碳化合成了一种新型的磺化碳催化剂。研究了在催化剂存在下从废食用油中超声辅助生物柴油的生产。通过BET，XRD，PSD，SEM-EDS，TGA，FT-IR，XPS和TPD表征了该新型催化剂。该催化剂表现出高达1.87 mmol g（-1）.2（k）的高酸度，并且应用Box-Behnken设计以找到获得最大脂肪酸甲酯（FAME）产量的最佳条件。最优化的结果表明，在超声辅助生物柴油生产中，催化剂负载量为11.5 wt％，反应时间为8.8 min，反应温度为117°C，FAME的最大收率高达90.8％。在最佳条件下对催化剂的可重复使用性进行了4个循环的研究，结果表明，再生的催化剂可以重复使用，而不会严重降低FAME的收率。动力学研究表明，该反应遵循一级反应动力学，活化能为11.64 kJ mol（-1）。

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