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作为腐蚀抑制剂的宁衍生离子液体
Sharon Monaci1,2, Daniela Minudri1, Lorenzo Guazzelli3
1POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastian, Spain.
Molecules (Basel, Switzerland)
|July 29, 2023
概括
来自素的新生物基离子液体 (IL) 显示出作为温钢环保腐蚀抑制剂的绝佳潜力. 在盐水环境中,IL胆注射剂显著降低了腐蚀,提供了可持续的解决方案.
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
- 绿色化学 绿色化学
背景情况:
- 结构的腐蚀造成了重大的经济损失和安全风险.
- 生物基的腐蚀抑制剂,特别是素衍生物和离子液体 (IL),提供了环保和可调节的替代品.
- 结合红素和ILs可以产生具有增强腐蚀抑制特性的新型化合物.
研究的目的:
- 为了研究新型生物基联离子液体 (ILs) 对温和钢的腐蚀抑制特性.
- 为了评估阴离子和阴离子变异对0.01M NaCl溶液中的腐蚀抑制的影响.
- 描述由抑制剂形成的保护性表面层.
主要方法:
- 使用电静电化学阻抗光谱 (PEIS) 和循环电动力学极化 (CPP) 来评估电化学行为.
- 扫描电子显微镜 (SEM),能量分散式X射线光谱 (EDS) 和光学造型测量用于表面特征.
- 腐蚀电流密度测量在含有和没有合成ILs的化溶液中的温钢.
主要成果:
- 基于素的IL胆注射剂显示出显著的腐蚀抑制,在0.01M NaCl中24小时后,将腐蚀电流密度从1.66 μA/cm2降低到0.066 μA/cm2.
- 该研究确定了特定的阳离子和阴离子对宁ILs性能的影响.
- 表面分析证实在温钢上形成了一层保护层.
结论:
- 生物基联ILs,特别是胆注射剂,是有效的和环保的腐蚀抑制剂,在盐水条件下用于温钢.
- 开发的IL具有可取的特性,如可用性和良好的生物/环境耐受性.
- 这项研究为使用可再生资源的可持续防腐蚀策略提供了一个有希望的途径.
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