Enhanced hydrogen separation by vertically-aligned carbon nanotube membranes with zeolite imidazolate frameworks as a selective layer

Ge, Lei and Du, Aijun and Hou, Meng and Rudolph, Victor and Zhu, Zhonghua (2012) Enhanced hydrogen separation by vertically-aligned carbon nanotube membranes with zeolite imidazolate frameworks as a selective layer. RSC Advances, 2 (31). pp. 11793-11800.

[img]
Preview
Text (Published Version)
c2ra21460a.pdf

Download (974Kb) | Preview

Abstract

Vertically-aligned carbon nanotube (VACNT) membranes show very high permeation fluxes due to the inherent smooth and frictionless nature of the interior of the nanotubes. However, the hydrogen selectivities are all in the Knudsen range and are quite low. In this study we grew molecular sieve zeolite imidazolate frameworks (ZIFs) via secondary seeded growth on the VACNT membranes as a gas selective layer. The ZIF layer has a thickness of 5–6 mm and shows good contact with the VACNT membrane surface. The VACNT supported ZIF membrane shows much higher H2 selectivity than Ar (7.0); O2 (13.6); N2 (15.1) and CH4 (9.8). We conclude that tailoring metal–organic frameworks on the membrane surface can be an effective route to improve the gas separation performance of the VACNT membrane.


Statistics for USQ ePrint 31150
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: No Faculty
Date Deposited: 25 May 2017 04:16
Last Modified: 25 May 2017 04:16
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies
Identification Number or DOI: 10.1039/c2ra21460a
URI: http://eprints.usq.edu.au/id/eprint/31150

Actions (login required)

View Item Archive Repository Staff Only