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用于气体吸附与分离的化学改性HKUST-1（铜）：混合金属与分级孔隙率

Chemically Modified HKUST-1(Cu) for Gas Adsorption and Separation: Mixed-Metal and Hierarchical Porosity.

作者信息

Yañez-Aulestia Ana, Trejos Víctor M, Esparza-Schulz J Marcos, Ibarra Ilich A, Sánchez-González Elí

机构信息

Laboratorio de Fisicoquímica de Superficies, Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa (UAM-I), C.P. 09310, Ciudad de México, Mexico.

Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, 04510, Ciudad de México, Mexico.

出版信息

ACS Appl Mater Interfaces. 2024 Nov 27;16(47):65581-65591. doi: 10.1021/acsami.4c15059. Epub 2024 Nov 12.

DOI:10.1021/acsami.4c15059
PMID:39531534
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11615856/
Abstract

The archetypical metal-organic framework (MOF), HKUST-1, has been systematically modified in both its organic and inorganic building blocks to introduce diversity in the metal centers and create defects within the network, achieving a variety of bimetallic hierarchical structures. These modifications changed the affinity of the MOFs for acid gases. The introduction of bimetallic sites mostly affects CO adsorption, while the hierarchical structure generates an increase in SO uptake capacity, allowing better performance in the separation of binary mixtures of these gases near room temperature. Notably, the synthesized HH-Cu material exhibited an exceptionally high IAST SO/CO (10:90) selectivity of 3420 at 298 K, outperforming benchmark MOFs with open metal sites.

摘要

典型的金属有机框架（MOF）材料HKUST-1，在其有机和无机结构单元方面都进行了系统修饰，以实现金属中心的多样化并在网络中产生缺陷，从而获得了多种双金属分级结构。这些修饰改变了MOF对酸性气体的亲和力。双金属位点的引入主要影响CO吸附，而分级结构则提高了SO的吸附容量，使得在室温附近对这些气体的二元混合物进行分离时性能更佳。值得注意的是，合成的HH-Cu材料在298 K时对SO/CO（10:90）表现出高达3420的IAST选择性，优于具有开放金属位点的基准MOF材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/c6fbf88abd26/am4c15059_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/3f8f75c79685/am4c15059_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/428fc24f7e5d/am4c15059_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/95fa86da02d1/am4c15059_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/37d476d79b33/am4c15059_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/77cb11245561/am4c15059_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/e0d7240a1c28/am4c15059_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/c6fbf88abd26/am4c15059_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/3f8f75c79685/am4c15059_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/428fc24f7e5d/am4c15059_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/95fa86da02d1/am4c15059_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/37d476d79b33/am4c15059_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/77cb11245561/am4c15059_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/e0d7240a1c28/am4c15059_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d0b/11615856/c6fbf88abd26/am4c15059_0007.jpg

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