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新的非离子双子表面活性剂的合成,表面活性和腐蚀抑制能力

M A Deyab¹, Ibrahim Z Ibrahim², Omnia A A El-Shamy³

¹Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt. hamadadeiab@yahoo.com.

Scientific reports

|April 5, 2024

概括

来自自然来源的环保双子座表面活性剂显示出出色的泡和乳化特性. GSC18在抑制碳钢腐蚀方面表现出卓越的性能,达到95.4%的效率.

科学领域:

绿色化学绿色化学
材料科学材料科学材料科学
腐蚀科学腐蚀科学

背景情况:

来自自然来源的可持续和非离子双子表面活性剂的开发对于环保应用至关重要.
了解碳化合物链长度和表面活性剂特性 (发泡,乳化,表面活性) 之间的关系至关重要.
碳钢在酸性介质中的腐蚀抑制仍然是一个重要的工业挑战.

研究的目的:

从天然原料中合成和表征新的非离子双子表面活性剂 (GSC12,GSC16,GSC18).
评估这些表面活性剂的表面活性,泡和乳化能力.
研究这些双子表面活性剂作为碳钢在1M HCl中的腐蚀抑制剂的有效性.

主要方法:

聚乙基二酸盐 (gemini表面活性剂) 的合成.
使用FT-IR,1HNMR和13CNMR光谱进行了表征.
测量表面张力以确定临界微粒度 (CMC) 和热力学参数 (ΔGads, ΔGmic).
使用理论,减肥和电化学技术 (例如,兰迈尔吸附异温) 的腐蚀抑制研究.

主要成果:

成功合成并对GSC12,GSC16和GSC18表面活性剂进行光谱确认.
GSC18表现出最低的CMC (0.381 × 10^-4 M) 和最高的自发吸附/化 (负 ΔGads, ΔGmic).
GSC18在1M HCl中证明了碳钢的优异腐蚀抑制效率,达到95.4%.

结论:

合成的Gemini表面活性剂在环境上是可以接受的,并且具有理想的表面活性特性.
碳化合物链的长度显著影响表面活性剂的性能,较长的链 (GSC18) 显示了增强的活性.
这些新的双子座表面活性剂,特别是GSC18,显示出作为碳钢的有效和绿色腐蚀抑制剂的显著前景.

关键词:

腐蚀是一种腐蚀.双子座表面活性剂双子座表面活性剂表面活动表面活动理论研究理论研究.

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