基于伊米达的离子液表面活性剂的界面特性和碳捕获能力的合成和评估
Minglu Shao1,2,3, Youqi Wang1,2, Ping Liu1,2
1State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China.
ACS omega
|June 19, 2023
概括
这项研究合成了一种新的离子液体表面活性剂,用于增强石油回收. 表面活性剂有效地降低了表面张力,增强了乳化,并捕获了二氧化碳 (CO2),显示了CCUS-EOR应用的前景.
科学领域:
- 石油工程是石油工程中的一个.
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 离子液体显示出作为化学洪水剂的潜力,用于增强石油回收 (EOR).
- 开发结合EOR特性与碳捕获的多功能剂对于可持续能源解决方案至关重要.
研究的目的:
- 为了合成和表征一种基于伊米达的双功能离子液态表面活性剂.
- 评估其在降低界面张力 (IFT),乳化和二氧化碳 (CO2) 捕获方面的性能.
主要方法:
- 合成具有不同链长度的基于伊米达的离子液态表面活性剂 ([C12mim][Br],[C14mim][Br],[C16mim][Br]).
- 测量油和盐水之间的界面张力 (IFT).
- 使用乳化指数评估乳化能力.
- 在特定条件下的二氧化碳吸收能力的量化 (0.1 MPa, 25 °C).
主要成果:
- 合成的离子液体表面活性剂显著降低了IFT,随着度的增加,[C16mim][Br]的值降至0.051 mN/m.
- 乳化能力随着基链长度的增加而增加,其中[C16mim][Br]显示了最高的指数 (0.597).
- 离子液体表面活性剂显示出相当大的二氧化碳吸收能力,每mol表面活性剂达到0.48mol二氧化碳.
结论:
- 这种双功能离子液体表面活性剂表现出卓越的表面活性,乳化特性和二氧化碳捕获能力.
- 增加基链长度可以提高表面活性和乳化.
- 这些发现为在碳捕获,利用和储存增强型石油回收 (CCUS-EOR) 中应用离子液态表面活性剂提供了理论基础.
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