Ab Rahim Asyraf Hanim, Yunus Normawati M, Bustam Mohamad Azmi
Centre for Research in Ionic Liquid (CORIL), Institute of Contaminant Management, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia.
Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia.
Molecules. 2023 Oct 14;28(20):7091. doi: 10.3390/molecules28207091.
CO absorption has been driven by the need for efficient and environmentally sustainable CO capture technologies. The development in the synthesis of ionic liquids (ILs) has attracted immense attention due to the possibility of obtaining compounds with designated properties. This allows ILs to be used in various applications including, but not limited to, biomass pretreatment, catalysis, additive in lubricants and dye-sensitive solar cell (DSSC). The utilization of ILs to capture carbon dioxide (CO) is one of the most well-known processes in an effort to improve the quality of natural gas and to reduce the green gases emission. One of the key advantages of ILs relies on their low vapor pressure and high thermal stability properties. Unlike any other traditional solvents, ILs exhibit high solubility and selectivity towards CO. Frequently studied ILs for CO absorption include imidazolium-based ILs such as [HMIM][TfN] and [BMIM][OAc], as well as ILs containing amine groups such as [Cho][Gly] and [CImPA][Gly]. Though ILs are being considered as alternative solvents for CO capture, their full potential is limited by their main drawback, namely, high viscosity. Therefore, the hybridization of ILs has been introduced as a means of optimizing the performance of ILs, given their promising potential in capturing CO. The resulting hybrid materials are expected to exhibit various ranges of chemical and physical characteristics. This review presents the works on the hybridization of ILs with numerous materials including activated carbon (AC), cellulose, metal-organic framework (MOF) and commercial amines. The primary focus of this review is to present the latest innovative solutions aimed at tackling the challenges associated with IL viscosity and to explore the influences of ILs hybridization toward CO capture. In addition, the development and performance of ILs for CO capture were explored and discussed. Lastly, the challenges in ILs hybridization were also being addressed.
对高效且环境可持续的一氧化碳（CO）捕集技术的需求推动了CO吸收的发展。离子液体（ILs）合成方面的进展因其有可能获得具有特定性质的化合物而备受关注。这使得ILs可用于各种应用，包括但不限于生物质预处理、催化、润滑剂添加剂和染料敏化太阳能电池（DSSC）。利用ILs捕集二氧化碳（CO₂）是提高天然气质量和减少温室气体排放的最知名工艺之一。ILs的一个关键优势在于其低蒸气压和高热稳定性。与任何其他传统溶剂不同，ILs对CO表现出高溶解度和选择性。常用于CO吸收研究的ILs包括咪唑基ILs，如[HMIM][TfN]和[BMIM][OAc]，以及含胺基的ILs，如[Cho][Gly]和[CImPA][Gly]。尽管ILs被视为CO捕集的替代溶剂，但其全部潜力受到其主要缺点即高粘度的限制。因此，鉴于ILs在捕集CO方面具有广阔前景，ILs的杂化已被引入作为优化其性能的一种手段。由此产生的杂化材料预计将展现出各种化学和物理特性。本综述介绍了ILs与多种材料（包括活性炭（AC）、纤维素、金属有机框架（MOF）和商业胺）杂化的相关工作。本综述的主要重点是介绍旨在应对与IL粘度相关挑战的最新创新解决方案，并探讨ILs杂化对CO捕集的影响。此外，还对用于CO捕集的ILs的发展和性能进行了探讨和讨论。最后，也阐述了ILs杂化面临的挑战。
