在没有氧气的环境中,生物柴油组件对产生的腐蚀
Fabiola Vergara-Juarez1, Jesus Porcayo-Calderon2, Juan Pablo Perez-Orozco1
1Tecnológico Nacional de México/Instituto Tecnológico de Zacatepec, Departamento de Ingeniería Química y Bioquímica, Calzada Tecnológico 27, Zacatepec de Hidalgo 62780, Morelos, Mexico.
Materials (Basel, Switzerland)
|April 27, 2024
概括
生物柴油中的脂肪酸甲基 (FAMEs) 影响腐蚀. 含有C=C键的不和FAMEs形成了一层保护层,与和FAMEs相比,减少腐蚀.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 腐蚀工程 腐蚀工程
背景情况:
- 生物柴油成分,特别是脂肪酸甲基 (FAMEs),影响金属储存容器的腐蚀.
- 在FAME中存在碳-碳双键 (C=C) 是影响腐蚀的关键因素.
- 了解FAME在腐蚀中的作用对于确保生物柴油储存系统的完整性至关重要.
研究的目的:
- 研究FAME中C=C键对无氧环境中的腐蚀的影响.
- 为了比较和 (甲基酸盐) 和不和 (甲基酸盐,甲基酸盐) FAMEs在上的腐蚀行为.
- 分析不和FAME对腐蚀的保护机制.
主要方法:
- 在100,200和280°C进行了1000小时的质量损失测定,使用纯甲基酸盐 (MS) 和MS与不和FAMEs (MS-5% MO,MS-5% ML).
- 对FAME的化学分析涉及FTIR,TGA和GC/MS;对的表面分析使用SEM/EDS.
- 电化学技术 (潜在动力极化,LPR,EIS) 评估了热降解FAME产品在水性提取物中诱导的腐蚀.
主要成果:
- 与不和甲基混合物相比,纯甲基酸盐 (MS) 的腐蚀率更高.
- SEM/EDS分析对表面和暴露后的化学成分进行了表征.
- 电化学测试表明,不和FAME的热降解产品在上形成的被动层比纯MS的产品更厚.
结论:
- 由于它们的C=C键,不和的FAME为提供了比和的FAME更好的腐蚀保护.
- 不和FAME的热降解产物在表面形成保护性被动层方面发挥着重要作用.
- 生物柴油成分管理对于减轻储存应用中的腐蚀至关重要.
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