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通过协同氧化物改性来增强废弃蛋衍生的CaO催化剂用于生物柴油生产:一项全面的催化和动力学研究

Lebohang Macheli¹, Gerard M Leteba², Sarah L George²

¹Department of Chemical and Materials Engineering, University of South Africa Cnr Christian De Wet and Pioneer Road, Florida 1709 Johannesburg South Africa machelg@unisa.ac.za jewelll@unisa.ac.za.

|January 30, 2026

概括

用金属氧化物改性废弃蛋为可持续生物柴油生产创造了有效的催化剂. 经过TiO2修改的CaO获得了89.7%的脂肪酸甲基产量,显示出更高的稳定性和可用于绿色化学应用的可重复使用性.

科学领域:

绿色化学和可持续材料
不同质的催化剂.
废弃物价值化废弃物价值化废弃物价值化

背景情况:

从废物中生产生物柴油提供了环境和经济上的优势.
纯氧化 (CaO) 催化剂具有诸如低表面积和低可重复使用性等局限性.
用金属氧化物对CaO进行修改可以提高催化性能.

研究的目的:

从废弃的蛋中合成和描述金属氧化物修饰的CaO催化剂.
为了评估生物柴油生产中这些改性催化剂的转性能.
研究结构-活性关系和反应动力学.

主要方法:

通过湿浸和化合成催化剂.
使用像XRD这样的技术进行物理化学表征.
在优化条件下对转化反应的性能评估.
动力和同热分析.

主要成果:

TiO2修饰的CaO表现出脂肪酸甲基 (FAME) 的最高产量 (89.7%).
在改性催化剂,特别是TiO2-CaO中观察到增强的基本性和表面积.
修改后的催化剂表现出极好的稳定性与最小的失活 (<2%的损失超过四个周期).
动力分析表明伪第一阶行为和合作吸附效应.

结论:

金属氧化物修饰,特别是TiO2,显著改善生物柴油合成的CaO催化剂性能.
改性催化剂的增强稳定性和可重复使用性归因于氧化物诱导的稳定性.
这项研究推进了可持续生物柴油生产的耐用,废物衍生异质催化剂的设计.

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