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首页> 外文期刊>Separation and Purification Technology >Ionic liquid cobalt complex as O-2 carrier in the PIM-1 membrane for O-2/N-2 separation
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Ionic liquid cobalt complex as O-2 carrier in the PIM-1 membrane for O-2/N-2 separation

机译：在PIM-1膜中作为O-2载体的离子液体钴络合物，用于O-2 / N-2分离

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摘要

Ionic liquids (ILs) are attractive and prospective materials used in membranes due to the nonvolatility, structure tunability, and the ability to tune the interface compatibility. The cobalt IL Bmim(2)Co(NCS)(4) possesses the porphyrin-like N4-coordinated cobalt center which could selectively and reversibly interact with O-2. Herein the Bmim(2)Co(NCS)(4) as liquid-phase oxygen carrier was used to fabricate thin-film composite (TFC) membrane with the polymer of intrinsic microporosity (PIM-1). The microstructures, properties and gas separation performance of the membrane were compared with the TFC membrane which takes cobalt porphyrin (T(4-Cl)PPCo) as a carrier. We found that the addition of a small amount of T(4-Cl)PPCo can enlarge the d-spacing of packed chains of PIM-1 and significantly increase the fractional free volume (FFV) and the gas permeability of the membrane, but the selectivity is unsatisfactory. It is worth noting that adding Bmim(2)Co(NCS)(4) into the polymer can increase greatly the O-2/N-2 selectivity which is higher than that of the membrane with T(4-Cl)PPCo. Although the addition of Bmim(2)Co(NCS)(4) decreases the d-spacing of packed chains of PIM-1, resulting in the slight decline of FFV and gas permeability of the membrane, the Bmim(2)Co(NCS)(4)/PIM-1 TFC membranes exhibit better O-2/N-2 separation performance than the T(4-Cl)PPCo/PIM-1 TFC membranes in consideration of the Robeson upper bound.
机译：离子液体（ILS）是由于非易失性，结构可调性和调整界面兼容性的能力，具有膜的吸引力和前瞻性材料。钴IL Bmim（2）CO（NCS）（4）具有卟啉样N4配位钴中心，其可以选择性地和可逆地与O-2相互作用。在此，BMIM（2）CO（NCS）（4）作为液相氧载体用于制造薄膜复合物（TFC）膜，具有本征微孔（PIM-1）的聚合物。将膜的微观结构，性质和气体分离性能与TFC膜进行比较，其作为载体服用钴卟啉（T（4-Cl）ppco）。我们发现添加少量T（4-Cl）PPCO可以扩大PIM-1的填充链的D-间距，并显着增加膜的分数自由体积（FFV）和气体渗透性，但是选择性是不满意的。值得注意的是，将BMIM（2）CO（NCS）（4）添加到聚合物中可以大大增加O-2 / N-2选择性，其高于具有T（4-Cl）PPCO的膜的选择性。尽管Bmim（2）Co（NCS）（4）的添加降低了PIM-1的填充链的D-间距，导致膜的FFV和膜的透气性略有下降，BMIM（2）CO（NCS ）（4）/ PIM-1 TFC膜在考虑到罗伯森上界时，比T（4-CL）PPCO / PIM-1 TFC膜表现出更好的O-2 / N-2分离性能。

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  • 作者

    Han Jiuli; Bai Lu; Luo Shuangjiang; Yang Bingbing; Bai Yinge; Zeng Shaojuan; Zhang Xiangping;

  • 作者单位

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn CAS Key Lab Green Proc &

    Engn Beijing Key Lab Ion Liquids Clean Proc State Key Beijing 100190 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分离过程;气化工艺;
  • 关键词

    Cobalt ionic liquid; Cobalt porphyrin; PIM-1; O-2/N-2 separation; Thin-film composite membrane;

    机译：钴离子液体;钴卟啉;PIM-1;O-2 / N-2分离;薄膜复合膜;

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