Issue 17, 2016

Tuning the adsorption behaviors of water, methanol, and ethanol in a porous material by varying the flexibility of substituted groups

Abstract

Exploring the adsorption and separation of water, methanol, and ethanol is important concerning the use of a sustainable energy source from biofuel. In this paper, the effects of the flexibility of substituted groups have been studied based on three iso-reticular metal–organic frameworks (MOFs), in which the pore surface is decorated with propargyl (–CH2–C[triple bond, length as m-dash]CH), allyl (–CH2–CH[double bond, length as m-dash]CH2), and propyl (–CH2–CH2–CH3) groups respectively. These substituted groups stretch into the channel, acting as gates, and the gate-opening for guests is controlled by the flexibility as well as host–guest interactions. Our study results indicate that (i) the adsorption capacity of water, methanol and ethanol enhances accordingly with the increase of the flexibility of substituted groups; (ii) the adsorptive discrimination of water, methanol, and ethanol on this porous sorbent could be tuned by varying the substituted groups.

Graphical abstract: Tuning the adsorption behaviors of water, methanol, and ethanol in a porous material by varying the flexibility of substituted groups

Supplementary files

Article information

Article type
Communication
Submitted
18 Feb 2016
Accepted
01 Apr 2016
First published
14 Apr 2016

Dalton Trans., 2016,45, 7235-7239

Tuning the adsorption behaviors of water, methanol, and ethanol in a porous material by varying the flexibility of substituted groups

Y. Sha, S. Bai, J. Lou, D. Wu, B. Liu and Y. Ling, Dalton Trans., 2016, 45, 7235 DOI: 10.1039/C6DT00658B

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