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Chenguang Qian, Chunquan Li, Peng Huang, Jialin Liang, Xin Zhang, Jifa Wang, Jianbing Wang, and Zhiming Sun, Research progress of CO2 capture and mineralization based on natural minerals, Int. J. Miner. Metall. Mater., 31(2024), No. 6, pp.1208-1227. https://dx.doi.org/10.1007/s12613-023-2785-4
Chenguang Qian, Chunquan Li, Peng Huang, Jialin Liang, Xin Zhang, Jifa Wang, Jianbing Wang, and Zhiming Sun, Research progress of CO2 capture and mineralization based on natural minerals, Int. J. Miner. Metall. Mater., 31(2024), No. 6, pp.1208-1227. https://dx.doi.org/10.1007/s12613-023-2785-4
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基于天然矿物的CO2捕集与矿化研究进展与发展趋势

摘要: 天然矿物因其储量丰富、价格低廉、良好物理性能和化学稳定性等优点,被认为可在CO2捕集及矿化方面发挥重要的作用。本文对不同天然矿物在捕集与矿化CO2方面的研究现状进行了综述,并介绍了多种提高天然矿物捕集与矿化CO2性能的方法。在矿物捕集CO2方面,概述了以高岭土、埃洛石、蒙脱石、凹凸棒石、膨润土、海泡石等具有较高的比表面积以及丰富的孔结构与活性位点的矿物作为载体制备高效CO2捕集材料研究进展,总结了热、酸、碱、有机胺、氨基硅烷、离子液体等不同改性方式对矿物载体的改性机理与应用效能。基于研究现状,提出应充分立足于矿物的天然禀赋,选择适宜的改性方法,探索具有更高比表面积及更多活性位点的复合材料,将是未来天然矿物基复合材料捕集CO2研究的主要发展方向。在矿物矿化CO2方面,概述了以镁橄榄石、蛇纹石、硅灰石等钙、镁含量较高的矿物作为原料,直接和间接矿化CO2的原理及技术路线,并详细介绍了以盐酸、乙酸、熔盐、铵盐等作为助剂间接矿化CO2的研究现状,并指出应进一步研发可循环使用的助剂,同时回收矿化过程中的高附加值产品,从而提升捕集过程的经济效益,将是未来天然矿物矿化CO2研究的发展方向。

 

Research progress of CO2 capture and mineralization based on natural minerals

Abstract: Natural minerals, such as kaolinite, halloysite, montmorillonite, attapulgite, bentonite, sepiolite, forsterite, and wollastonite, have considerable potential for use in CO2 capture and mineralization due to their abundant reserves, low cost, excellent mechanical properties, and chemical stability. Over the past decades, various methods, such as those involving heat, acid, alkali, organic amine, amino silane, and ionic liquid, have been employed to enhance the CO2 capture performance of natural minerals to attain high specific surface area, a large number of pore structures, and rich active sites. Future research on CO2 capture by natural minerals will focus on the full utilization of the properties of natural minerals, adoption of suitable modification methods, and preparation of composite materials with high specific surface area and rich active sites. In addition, we provide a summary of the principle and technical route of direct and indirect mineralization of CO2 by natural minerals. This process uses minerals with high calcium and magnesium contents, such as forsterite (Mg2SiO4), serpentine Mg3Si2O(OH)4, and wollastonite (CaSiO3). The research status of indirect mineralization of CO2 using hydrochloric acid, acetic acid, molten salt, and ammonium salt as media is also introduced in detail. The recovery of additives and high-value-added products during the mineralization process to increase economic benefits is another focus of future research on CO2 mineralization by natural minerals.

 

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