Anhydrous "Dry Ionic Liquids": A promising absorbent for CO2 capture
Anhydrous "Dry Ionic Liquids": A promising absorbent for CO2 capture
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无水“干离子液体”：一种有前途的二氧化碳捕获吸收剂
DOI：
10.1016/j.molliq.2020.112810
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发表时间：
2020
影响因子：
6
通讯作者：
Zhang Zhibing
中科院分区：
文献类型：
--
作者：
Chen Meisi;Wang Xindian;Liu Xiemin;Wu Youting;Zhang Feng;Zhang Zhibing
无水“干离子液体”（D-IL）通过用疏水二氧化硅纳米颗粒包裹乙二醇或甘油的任务官能化离子液体溶液以形成具有流动性的微米级颗粒来制备，用于快速捕获CO2。无水D-ILs不仅发挥了离子液体的稳定性和“干物质”的微小尺寸两种物质的优点，而且有效地克服了ILs粘度高和含干物质水溶液失水的缺点。这些D-IL的物理性质，包括真密度，比表面积和平均尺寸进行了测定，以评估的影响，溶液浓度上的微米粒子形态。考察了D-ILs的CO2捕集能力和捕集率，并与相应溶液进行了比较。结果表明，D-ILs具有较高的CO2捕集速度、良好的吸收能力和较高的再生效率。D-ILs的微米结构可以完全克服高粘度的阻力，从而发挥任务特异性离子液体（TSILs）的化学特性。
Anhydrous “Dry Ionic Liquids” (D-ILs) were prepared by wrapping task functionalized ionic liquid solutions of ethylene glycol or glycerol with hydrophobic silica nanoparticles, to form micron-sized particles with fluidity for rapid capture of CO2. The anhydrous D-ILs not only play the advantages of two substances: the stability of ionic liquid and the micro-size of “Dry matter”, but also effectively overcome the shortcomings of high viscosity of ILs and the water loss of dry matters containing aqueous solutions. Physical properties of these D-ILs, including true density, specific surface area and mean size were determined to evaluate the influence of the solution concentration on the micron particle morphology. The CO2capture capacity and capture rate of D-ILs were also investigated and compared with those of the corresponding solutions. It is confirmed that the D-ILs exhibit significantly high speed for CO2capture, excellent absorption capacity and considerable regeneration efficiency. The micron structure of D-ILs can completely overcome the resistance of high viscosity and thereby plays out the chemical characteristics of task specific ionic liquids (TSILs).