Issue 16, 2016

Hydrolytically stable ZIF-8@PDMS core–shell microspheres for gas–solid chromatographic separation

Abstract

Metal organic frameworks (MOFs) with exceptionally high surface areas, shape selectivity and availability of multiple active sites are suitable materials to serve as solid stationary phase for chromatographic applications. Packed columns filled with conventionally prepared MOFs result in high pressure drops and low column efficiency, mainly due to the presence of small irregular shaped crystals and broader size distribution. In this paper, we report the successful utilization of the hydrolytically stable microcrystalline zinc imidazolate (ZIF-8), a well-known MOF immobilized on a thermally stable polymer i.e., polydimethylsiloxane (PDMS) for application as a stationary phase towards gas–solid chromatographic separations. A gas chromatography (GC) column (2 m × 2.5 mm) packed with the ZIF-8@PDMS core–shell microspheres demonstrate efficient separation of liquid and gas mixtures including xylene isomers and natural gas mixtures. We also successfully used the stationary phase for quantification of ethanol concentration in aqueous samples; the column did not undergo any structural change suggesting its excellent hydrolytic stability.

Graphical abstract: Hydrolytically stable ZIF-8@PDMS core–shell microspheres for gas–solid chromatographic separation

Supplementary files

Article information

Article type
Paper
Submitted
25 صفر 1437
Accepted
12 ربيع الثاني 1437
First published
16 ربيع الثاني 1437

RSC Adv., 2016,6, 13426-13432

Hydrolytically stable ZIF-8@PDMS core–shell microspheres for gas–solid chromatographic separation

M. Srivastava, P. K. Roy and A. Ramanan, RSC Adv., 2016, 6, 13426 DOI: 10.1039/C5RA26077A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements