METAL-ORGANIC FRAMEWORK COMPOSITE WITH NANO METAL-ORGANIC FRAMEWORKS EMBEDDED IN HOST METAL-ORGANIC FRAMEWORK, METHOD FOR PRODUCING THE METAL-ORGANIC FRAMEWORK COMPOSITE AND GAS STORAGE INCLUDING THE METAL-ORGANIC FRAMEWORK COMPOSITE

摘要

Disclosed is a metal-organic framework composite including a host metal-organic framework, and nano metal-organic frameworks embedded In the host metal-organic framework. The host metal-organic framework and the nana metal-organic frameworks include different metals and organic ligands. The metal-organic framework composite has a structure in which the nano metal-organic frameworks are embedded in the host metal-organic framework. Due to this structure, defects are formed at the interfaces between the host metal-organic framework and the nano metal-organic frameworks, enabling the application of the metal-organic framework composite to gas storages with greatly improved gas storage efficiency. The metal-organic framework composite can be used as a gas adsorbent with very high efficiency due to its very large specific surface area. In addition, the metal-organic framework composite has high storage capacities for hydrogen, carbon dioxide, and methane and is thus very attractive from the viewpoint of industrial application. The metals and the ligands can be combined to make the metal-organic framework composite highly resistant to pressure, temperature, and water. Therefore, the metal-organic framework composite can also be applied to filters that can directly capture carbon dioxide from factory chimneys or can adsorb pollutants in water. Also disclosed are a method for producing the metal-organic framework composite and a gas storage using the metal-organic framework composite.

主权项

1. A metal-organic framework composite comprising a host metal-organic framework and nano metal-organic frameworks embedded in the host metal-organic framework, the host metal-organic framework and the nano metal-organic frameworks being represented by Formulae 1 and 2, respectively:
M1x1Oz1(L1G1)y1   (1) M2x2Ox2(L1G2)y2   (2) wherein M1 and M2 are different from each other and are each independently selected from Cu, Fe, Cr, Zn, Al, Mg, Nis Eu, Gd, and Tb, L1G1 and L1G2 are different from each other and are each independently selected from BDC, BTC, BTB, BBC, BTE, BHEHPI, TATB, TPBTM, BTP, BTEI, BTTI, TTEI, BTETCA, BNETPI, BHEI, DOT, ATC, DCDPBN, ImDC, DPBPyDC, PPy, THBTS, ADB, and BPP34C10DA, x1 is an integer from 1 to 6, x2 is an integer from 1 to 6, z1 is an integer from 1 to 4, z2 is an integer from 1 to 4, y1 is an integer from 1 to 6, and y2 is an integer from 1 to 6.