Influence of Solvent-Like Sidechains on the Adsorption of Light Hydrocarbons in Metal-Organic Frameworks - Aix-Marseille Université Access content directly
Journal Articles Chemistry - A European Journal Year : 2015

Influence of Solvent-Like Sidechains on the Adsorption of Light Hydrocarbons in Metal-Organic Frameworks

Abstract

A variety of strategies have been developed to adsorb and separate light hydrocarbons in metal-organic frameworks. Here, we present a new approach in which the pores of a framework are lined with four different C3 sidechains that feature various degrees of branching and saturation. These pendant groups, which essentially mimic a low-density solvent with restricted degrees of freedom, offer tunable control of dispersive host-guest interactions. The performance of a series of frameworks of the type Zn-2(fu-bdc)(2)(dabco) (fu-bdc(2-) = functionalized 1,4-benzene-dicarboxylate; dabco = 1,4-diazabicyclo[2.2.2]octane), which feature a pillared layer structure, were investigated for the adsorption and separation of methane, ethane, ethylene, and acetylene. The four frameworks exhibit low methane uptake, whereas C2 hydrocarbon uptake is substantially higher as a result of the enhanced interaction of these molecules with the ligand sidechains. Most significantly, the adsorption quantities and selectivity were found to depend strongly upon the type of sidechains attached to the framework scaffold.

Dates and versions

hal-01415946 , version 1 (13-12-2016)

Identifiers

Cite

Andreas Schneemann, Eric D. Bloch, Sebastian Henke, Philip L. Llewellyn, Jeffrey R. Long, et al.. Influence of Solvent-Like Sidechains on the Adsorption of Light Hydrocarbons in Metal-Organic Frameworks. Chemistry - A European Journal, 2015, 21 (51), pp.18764 - 18769. ⟨10.1002/chem.201503685⟩. ⟨hal-01415946⟩
522 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More