从废食用油生产生物柴油,使用β-氧化物支持的硫酸金属氧化物催化剂系统
Basiru O Yusuf1, Sulayman A Oladepo1,2, Saheed A Ganiyu1,3
1Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Kingdom of Saudi Arabia.
ACS omega
|July 10, 2023
概括
这项研究开发了一种新的SO42-/ZnO-β-氧化物催化剂,用于从废食用油 (WCO) 有效生产生物柴油. 催化剂实现了96.9%的转化,提供了可持续和成本有效的生物燃料解决方案.
科学领域:
- 催化剂是一种催化剂.
- 可再生能源可再生能源是可再生能源.
- 绿色化学 绿色化学
背景情况:
- 废食用油 (WCO) 是生物柴油的丰富,低成本原料.
- 在WCO中高含量的自由脂肪酸 (FFA) 阻碍了使用均催化剂的生物柴油产量.
- 异质固体酸催化剂在WCO中对FFA具有优越的耐受性.
研究的目的:
- 合成和评估SO42-/ZnO-β-zeolite作为WCO生物柴油生产的异质催化剂.
- 为了优化反应条件以获得最大的生物柴油产量.
- 评估催化剂的性能,稳定性和可重复使用性.
主要方法:
- 合成纯β-化石,ZnO-β-化石和SO42-/ZnO-β-化石催化剂.
- 使用FTIR,Pyridine-FTIR,N2吸附-脱附,XRD,TGA和SEM进行表征.
- 通过1H和13CNMR和GC-MS进行生物柴油分析.
- 优化催化剂加载,甲醇:油比,温度和反应时间.
主要成果:
- SO42-/ZnO-β-zeolite在WCO的同时化和转化方面表现出卓越的催化活性.
- 在最佳条件下,WCO与SO42-/ZnO-β-zeolite的转化率为96.9% (3.0重%催化剂,200°C,15:1甲醇:油,8小时).
- 催化剂具有很大的孔径 (6.5 nm),高表面积 (250.26 m2/g) 和良好的稳定性 (在3个循环后超过80%的转换).
- 生物柴油性能符合ASTM6751标准,反应动力学遵循伪第一阶模型 (Ea = 38.58 kJ/mol).
结论:
- SO42-/ZnO-β-zeolite是一种高效且可重复使用的催化剂,用于从WCO生产高质量的生物柴油.
- 催化剂的特性,包括大孔尺寸和高酸度,有助于其卓越的性能.
- 这项研究为可持续生物柴油生产,减轻浪费和减少对化石燃料的依赖提供了一个有希望的途径.
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