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源自咔唑聚合物的柱状碳膜

Pillared Carbon Membranes Derived from Cardo Polymers.

作者信息

Tajik Masoumeh, Bin Haque Syed Fahad, Perez Edson V, Vizuet Juan P, Firouzi Hamid Reza, Balkus Kenneth J, Musselman Inga H, Ferraris John P

机构信息

Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 W. Campbell Road, Richardson, TX 75080-3021, USA.

出版信息

Nanomaterials (Basel). 2023 Aug 9;13(16):2291. doi: 10.3390/nano13162291.

DOI:10.3390/nano13162291
PMID:37630876
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10457760/
Abstract

Carbon molecular sieve membranes (CMSMs) were prepared by carbonizing the high free volume polyimide BTDA-BAF that is obtained from the reaction of benzophenone-3,3',4,4'-tetracarboxylic dianhydride (BTDA) and 9,9-bis(4-aminophenyl) fluorene (BAF). The bulky cardo groups prevented a tight packing and rotation of the chains that leads to high permeabilities of their CMSMs. The incorporation of metal-organic polyhedra 18 (MOP-18, a copper-based MOP) in the BTDA-BAF polymer before pyrolysis at 550 °C prevented the collapse of the pores and the aging of the CMSMs. It was found that upon decomposition of MOP-18, a distribution of copper nanoparticles minimized the collapse of the graphitic sheets that formed the micropores and mesopores in the CMSM. The pillared CMSMs displayed CO and CH permeabilities of 12,729 and 659 Barrer, respectively, with a CO/CH selectivity of 19.3 after 3 weeks of aging. The permselectivity properties of these membranes was determined to be at the 2019 Robeson upper bound. In contrast, the CMSMs from pure BTDA-BAF aged three times faster than the CMSMs from MOP-18/BTDA-BAF and exhibited lower CO and CH permeabilities of 5337 and 573 Barrer, respectively, with a CO/CH selectivity of 9.3. The non-pillared CMSMs performed below the upper bound.

摘要

通过对由二苯甲酮 - 3,3',4,4'-四羧酸二酐（BTDA）与9,9 - 双（4 - 氨基苯基）芴（BAF）反应得到的高自由体积聚酰亚胺BTDA - BAF进行碳化制备了碳分子筛膜（CMSM）。庞大的咔唑基团阻止了链的紧密堆积和旋转，这导致其CMSM具有高渗透性。在550℃热解之前，将金属有机多面体18（MOP - 18，一种铜基金属有机多面体）掺入BTDA - BAF聚合物中，可防止孔的塌陷和CMSM的老化。研究发现，在MOP - 18分解时，铜纳米颗粒的分布使形成CMSM中微孔和中孔的石墨片的塌陷最小化。柱状CMSM在老化3周后，CO和CH的渗透率分别为12,729和659 Barrer，CO/CH选择性为19.3。这些膜的渗透选择性性能被确定处于2019年罗布森上限。相比之下，纯BTDA - BAF的CMSM老化速度比MOP - 18/BTDA - BAF的CMSM快三倍，并且分别表现出较低的CO和CH渗透率，分别为5337和573 Barrer，CO/CH选择性为9.3。非柱状CMSM的性能低于上限。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/db658a85a55b/nanomaterials-13-02291-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/85bff8f76688/nanomaterials-13-02291-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/8516edf8e64c/nanomaterials-13-02291-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/203f294e7d6e/nanomaterials-13-02291-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/4714676cac06/nanomaterials-13-02291-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/8a56df98016b/nanomaterials-13-02291-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/51ee492297db/nanomaterials-13-02291-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/34b471f80bc9/nanomaterials-13-02291-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/42f963a46c96/nanomaterials-13-02291-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/db658a85a55b/nanomaterials-13-02291-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/0b27394fbb7f/nanomaterials-13-02291-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/888054812bc4/nanomaterials-13-02291-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/020ed943e2de/nanomaterials-13-02291-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/65254b5abe11/nanomaterials-13-02291-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/146ac79d7cc9/nanomaterials-13-02291-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/85bff8f76688/nanomaterials-13-02291-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/8516edf8e64c/nanomaterials-13-02291-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/203f294e7d6e/nanomaterials-13-02291-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/4714676cac06/nanomaterials-13-02291-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/8a56df98016b/nanomaterials-13-02291-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/51ee492297db/nanomaterials-13-02291-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/34b471f80bc9/nanomaterials-13-02291-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/42f963a46c96/nanomaterials-13-02291-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2ca1/10457760/db658a85a55b/nanomaterials-13-02291-g014.jpg

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