为高效CO有为性能2分离与p -叔-Butylcalix [4]芳烃/的Pebax-1657混合基质膜,ACS Sustainable Chemistry & Engineering

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为高效CO有为性能₂分离与p -叔-Butylcalix [4]芳烃/的Pebax-1657混合基质膜
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2019-11-11 , DOI: 10.1021/acssuschemeng.9b04641
Atefeh Nadeali ₁ , Mona Zamani Pedram ₂ , Mohammadreza Omidkhah ₁ , Masoud Yarmohammadi ₃

Affiliation

在既定沿改善膜性能突出混合基质膜（MMM）的易感性p -叔-butylcalix [4]芳烃（CA）中的CO的能力₂吸附，基于的Pebax-1657的MMM已经使用CA的各种内容制备在这一点上，由于Pebax-1657和CA的有机性质，已经实现了在聚合物基体中分布良好的颗粒而没有团聚。另外，通过两种材料的主链上的官能团之间的非共价相互作用，增强了它们的可混溶性。此外，通过将CA引入聚合物基体中，CO ₂气体的渗透性显着提高，并且CO ₂ / N _2的选择性也显着提高和CO ₂ / CH ₄。与纯Pebax-1657膜相比，该结果在包含0.75 wt％CA的样品中更为显着，该样品将CO ₂的渗透率从140.78 Barrer提高到265.18（约88％）。因此，与纯膜相比，CO ₂ / CH ₄和CO ₂ / N ₂的选择性分别从25.35提高到51.51（几乎为103％）和从43.18提高到109.16（几乎是152％）。结果，CA和CO _2的官能团之间的物理相互作用气体被认为是影响显着渗透结果的关键参数。值得注意的是，含有0.75 wt％的CA的MMM超过了2008年Robeson上限。

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Promising Performance for Efficient CO2 Separation with the p-tert-Butylcalix[4]arene/Pebax-1657 Mixed Matrix Membrane

Highlighting mixed matrix membrane (MMM) susceptibility in improving the membrane performance along with established p-tert-butylcalix[4]arene (CA) ability in CO₂ sorption, Pebax-1657-based MMMs have been prepared using various contents of CA. In this regard, well-distributed particles in the polymeric matrix without agglomeration has been achieved because of the organic nature of both Pebax-1657 and CA. Additionally, their miscibility was intensified by noncovalent interactions between functional groups on the backbone of two materials. Furthermore, permeability of CO₂ gas was significantly increased by introducing CA into the polymeric matrix, as well as selectivity of CO₂/N₂ and CO₂/CH₄. This result was more remarkable in the sample containing 0.75 wt % CA that improved the permeation of CO₂ from 140.78 Barrer to 265.18 (about 88%) in comparison to the pure Pebax-1657 membrane. Accordingly, the selectivity of CO₂/CH₄ and CO₂/N₂ was enhanced from 25.35 to 51.51 (almost 103%) and from 43.18 to 109.16 (almost 152%), respectively, compared with the pure membrane. As a consequence, physical interactions between functional groups of CA and CO₂ gas were considered to be the key parameter affecting the remarkable permeation results. It is noteworthy that the MMM containing 0.75 wt % of CA overpassed the 2008 Robeson upper-bound limit.

更新日期：2019-11-13

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