Fundamental aspects of Solvent based CO2 capture.

使用化学溶剂从其他气体中分离二氧化碳是碳捕获和储存（CCS）过程的关键部分。胺已常规使用多年，但现在认识到其性能和性质存在局限性，特别是能量消耗和氧化降解方面的问题。目前正在开发使用胺以外的化学品的替代溶剂，包括由利兹的C-Capture商业化的溶剂。他们开发了一类新的化学溶剂，在室温下与CO2反应，但在加热时释放CO2，这是典型的热摆动燃烧后CO2捕获过程。这种方法有许多方面需要更详细的基础研究，包括测量潜在溶剂组分家族的物理和化学性质，以及它们如何相互作用，以帮助了解影响这种新系统性能的关键因素。该项目旨在从基本角度深入了解新的CO2捕获化学，其结果将有助于提高对关键因素的理解，以帮助建议未来的修改，这些修改可能可行，以提高捕获率，降低能源需求，防止溶剂降解，并使该技术能够用于特别具有挑战性的气流，包括那些具有低CO2含量的气流。例如来自天然气燃烧（4%-5%CO2）、具有特别挑战性污染水平的气流（例如水泥制造）或CO2浓度相对较低（415 ppm CO2）的直接空气捕获应用。

The use of chemical solvents to separate CO2 from other gases is a key part of the Carbon Capture and Storage (CCS) process. Amines have been used routinely for many years, but it is now recognised there are limitations in their performance and properties, with particular issues around energy consumption, and oxidative degradation. Alternative solvents using chemicals other than amines are now currently under development, including those being commercialised by Leeds-based C-Capture. They have developed a new class of chemical solvents which react with CO2 at room temperature, but then release CO2 on heating, features typical of a thermal swing post-combustion CO2 capture process. There are numerous aspects to this approach which require more detailed fundamental study, including measuring the physical and chemical properties of families of potential solvent components, and how they interact together, to help understand the key factors affecting performance of such new systems. The project is designed to provide insight into new CO2 capture chemistry from a fundamental perspective, and the results will help improve the understanding of key factors to help suggest future modifications which may be feasible to provide improved capture rates, reduce energy requirements, prevent solvent degradation, and to enable the technology to be used with particularly challenging gas streams, including those with low CO2 content, such as that from natural gas combustion (4%-5% CO2), gas streams which have particularly challenging levels of contamination (e.g. cement manufacture), or in direct air capture applications where the concentration of CO2 is comparatively low (415ppm CO2).