通过二甲基酸盐增强二胺抗氧化活性
Carly S Hanson1, Michael Donohoe1, Derek A Pratt1
1Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie Pvt., Ottawa K1N 6N5, Ontario, Canada.
The Journal of organic chemistry
|December 5, 2023
概括
二甲酸盐 (MDTCs) 通过将无效的氧化物转化为更强大的激素捕获抗氧化剂 (RTAs) 来增强二甲胺 (DPAs) 的抗氧化能力. 这种协同作用对于滑剂添加剂的性能至关重要.
科学领域:
- 三角学和滑科学 三角学和滑科学
- 氧化化学 有氧化化学
- 材料科学 材料科学 材料科学
背景情况:
- 二甲酸盐 (MDTCs) 是重要的滑剂添加剂,主要以抗磨损特性而闻名.
- 尽管MDTCs的广泛使用,但其抗氧化能力仍然不太清楚.
- 双胺 (DPA) 是滑剂中常见的激素捕获抗氧化剂 (RTA).
研究的目的:
- 阐明MDTCs和DPAs协同抗氧化作用背后的机制.
- 研究MDTCs在不同条件下增强DPA的抗氧化性能中的作用.
- 为了确定参与协同抗氧化过程的化学物种.
主要方法:
- 在100°C和160°C时对斯卡兰和n-hexadecane的自氧化运动研究.
- 使用准备性实验对反应产物的分析.
- 介质物种的光谱鉴定.
主要成果:
- MDTCs显著增强DPA的抗氧化能力,特别是在中等温度下.
- 协同作用取决于碳化合物基质,在不和碳化合物中消失.
- MDTCs有助于将不太有效的二甲氧化物转化为更强大的基因捕捉抗氧化剂.
- 一个含有氧气的DPA二元体被确定为一个关键产品,通过MDTC氧化形成.
结论:
- MDTCs作为辅助抗氧化剂,再生或转化DPAs成为更有效的激素清除剂.
- 拟议的机制包括将MDTC氧化为二氧化物种,从而促进氧化物转化.
- 了解这种协同作用对于设计具有增强氧化稳定的先进滑剂添加剂至关重要.
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