Evaluation of a new class of inhibitors for high temperature CO2 corrosion

新型高温CO2腐蚀抑制剂的评价

• 批准号: 2714463
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2714463
• 关键词: Evaluation; new; class; inhibitors; temperature

A common method for protecting carbon steel against material dissolution in aqueous CO2-containing environments (such as geothermal systems) is the continuous injection of corrosion inhibitors. These inhibitors function by adsorbing (physically or chemically) onto the steel surface, creating a barrier to electrochemically active/aggressive species. Towards higher temperatures, the functionality of many common inhibitors (such as imidazolines) is lost, as the chemistries undergo rapid hydrolysis and revert into their considerably less efficient precursors. Although the development of thermodynamically stable inhibitors is indeed possible, this typically comes at a price of increased toxicity and reduced bio-degradability. Due to the ever tightening legislation associated with chemistries used for industrial processes, the synthesis of new inhibitory molecules proves extremely challenging. Recent research has resulted in the synthesis of a new class of heterocyclic molecules which have increased thermal stability. This project will look at building upon the design, synthesis and evaluation/optimisation of this new class of inhibitory molecules. The project will explore new methodologies for the design and evaluation of inhibitory molecules using autoclave systems, with the intention of improving the understanding of the corrosion mechanisms of such chemistries.

在含水含CO2环境（如地热系统）中保护碳钢免受材料溶解的常用方法是连续注入缓蚀剂。这些抑制剂通过吸附（物理或化学）到钢表面上来发挥作用，从而对电化学活性/侵蚀性物质形成屏障。当温度升高时，许多常见抑制剂（如咪唑啉）的功能会丧失，因为化学物质会迅速水解，并恢复为效率相当低的前体。虽然开发药物稳定的抑制剂确实是可能的，但这通常是以增加毒性和降低生物降解性为代价的。由于与用于工业过程的化学品相关的立法日益严格，新抑制分子的合成证明极具挑战性。最近的研究已经导致合成了一类新的具有增加的热稳定性的杂环分子。该项目将着眼于建立在设计，合成和评估/优化这类新的抑制分子。该项目将探索使用高压釜系统设计和评估抑制分子的新方法，旨在提高对此类化学品腐蚀机制的理解。