473309 Selective Gas Adsorption on Functionalized H3btc and Di-Isophthalate Based Metal Organic Frameworks
Selective Gas Adsorption on Functionalized H3BTC and Di-Isophthalate Based Metal Organic Frameworks
Prudhviraj Medikonda1, Sastri Chivukula2 and Sasidhar Gumma1*
1 Department of Chemical Engineering, Indian Institute of Technology Guwahati, India
2 Department of Chemistry, Indian Institute of Technology Guwahati, India
Functionalization of organic linkers towards metal organic frameworks (MOFs) containing open metal sites having more attention and interest provides predictable pore size, surface area and more adsorption sites (Collins, 2009). The Cu-BTC MOF is a widely studied adsorbent for gases separation and storage, but limited work has been done to modify the H3BTC ligand or functionalize Cu-BTC to optimize its properties for gas adsorption. On the other hand, organic linkers containing double-bond functionalities have rarely been studied for gas adsorption using MOFs and N containing MOFs are more selective for CO2 over N2, CH4 and CO (Liu et al. 2007, Belof et al. 2007). In this work we report the effect of functionalization by comparing the gas adsorption properties of 1 with 2 and those of 3 with 4. The role of the functional group and the polarity of the gas will be discussed.
Scheme 1: Structures of organic linkers H3BTC (1), H3IBTC (2), H4AzoBTC (3) and H4 reduced AzoBTC (4) used in this work
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