CO2で飽和した油田産水における炭素鋼の腐食阻害剤として,有機酸によって変化する鎖長を持つチオフェン-イミダゾリン誘導体
Shuxin Jia1, Lei Xiong1, Sisi Du1
1School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University Shihezi 832003 China jiashuxin2021@163.com 18891556110@163.com dusisi@stu.shzu.edu.cn 18841518147@163.com ljbing@126.com.
RSC advances
|September 5, 2025
まとめ
新しいイミダゾリン製の腐食阻害剤は,油田水中のCO2腐食から炭素鋼を保護します. S4- C11は優れた性能を示し,加強された水性および電子提供能力により,87. 55%の抑制効率を達成しました.
科学分野:
- 材料科学
- 電気化学
- 腐食工学
背景:
- 油田で生成された水に二酸化炭素が溶けると 深刻なパイプラインの腐食が起こります
- 中高温の腐食阻害剤は,石油・ガス事業における炭素鋼の保護に不可欠です.
- 既存の阻害剤は 効果と環境への影響で 課題に直面しています
研究 の 目的:
- CO2環境における炭素鋼の新型イミダゾリン系腐蝕阻害剤の合成と評価
- 異なる炭素鎖の長さを持つチオフェン-イミダゾリン誘導体の構造-活性関係を調査する.
- 最適化された阻害器の設計のための腐食阻害のメカニズムを解明する.
主な方法:
- イミダゾリン衍生物 (S4-C7,S4-C9,S4-C11,S4-C13) の合成
- 中高温で減量測定と電気化学試験 (例えば,ポテンチオダイナミック・ポラライゼーション,EIS)
- 表面形態分析 (例えば,SEM) と量子化学計算 (DFT) と分子動力学のシミュレーション.
主要な成果:
- S4- C11 (チオフェン- イミダゾリンラウラミド) は, 100 mgのL-1で87. 55%に達する優れた腐食抑制効率を示した.
- 耐腐蝕抑制の効率は,より長い炭素鎖によって増加し,それは水害性の強化に起因する.
- S4-C11は優れた電子提供能力,低い吸収エネルギーを示し,S4-C7と比較してよりコンパクトな保護膜を形成した.
結論:
- イミダゾリン誘導体,特にS4-C11は,CO2を含む油田水中の炭素鋼の効果的な腐食阻害剤である.
- S4-C11の性能の向上は,その最適の遠水性,電子提供能力,膜形成特性に関連しています.
- この研究は,石油フィールドの要求の高いアプリケーションのための高度な腐食阻害剤を設計するための貴重な洞察を提供します.
関連する概念動画
Corrosion of Reinforcement
251
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
251
Corrosion
25.5K
The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
25.5K
Precipitation and Co-precipitation
2.0K
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
2.0K
Preparation and Reactions of Thiols
6.7K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
6.7K
Structure and Nomenclature of Thiols and Sulfides
5.0K
Thiols and sulfides are sulfur analogs of alcohols and ethers, respectively, where the sulfur atom takes the place of the oxygen atom. Thus, thiols are generally represented as RSH, where R is an alkyl substituent and —SH is the functional group. On the other hand, in sulfides, the central sulfur atom is bonded to two hydrocarbon groups on either side. Depending upon the type of group, sulfides can be either symmetrical or asymmetrical. Both thiols and sulfides display a bent geometry,...
5.0K
Waterproofing and Anti-Bacterial Admixtures in Concrete
111
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
Waterproofing admixtures render concrete hydrophobic,...
111


