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

防止碳钢在含二氧化碳的水环境（如地热系统）中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，形成电化学活性/侵略性物质的屏障。当温度升高时，许多常见抑制剂（如咪唑啉类）的功能会丧失，因为这些化学物质会经历快速水解，并恢复为效率相当低的前体。虽然开发热力学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可降解性为代价的。由于与工业过程中使用的化学物质相关的立法日益严格，新的抑制分子的合成证明极具挑战性。最近的研究已经合成了一类新的杂环分子，它们具有更高的热稳定性。该项目将着眼于构建这类新型抑制分子的设计、合成和评估/优化。该项目将探索使用高压灭菌器系统设计和评估抑制分子的新方法，旨在提高对此类化学物质腐蚀机制的理解。

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.