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 Gumma^1*

1 Department of Chemical Engineering, Indian Institute of Technology Guwahati, India

2 Department of Chemistry, Indian Institute of Technology Guwahati, India

E-mail: s.gumma@iitg.ernet.in

                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.

1	2	3	4

                                  

Scheme 1: Structures of organic linkers H₃BTC (1), H₃IBTC (2), H₄AzoBTC (3) and H₄ reduced AzoBTC (4) used in this work

                References

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