Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 493, Issue -, Pages 88-96Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2015.06.019
Keywords
ZIF-8; Membrane; Diffusivity; Hydrocarbon; Separation
Categories
Funding
- National Natural Science Foundation of China [21406106]
- Jiangsu Provincial NSFC [BK20130928]
- Foundation of Jiangsu Educational Committee of China [14KJB530006]
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Zeolitic imidazolate framework ZIF-8 has shown great potential for effective separation of hydrocarbon mixtures based on its intrinsic ultramicroporous feature. In order to explore the permeation and diffusion properties of hydrocarbons through ZIF-8 membrane, high-quality ZIF-8 membranes with a separation factor of similar to 90 for propylene/propane are successfully prepared via optimizing the activation processes. Single-component permeation data for hydrocarbons (C1-C4) through the improved ZIF-8 membrane are measured and analyzed by Maxwell-Stefan (MS) model to get the transport diffusivities of these hydrocarbons. The diffusivity values of hydrocarbon compare well with those obtained by other experimental techniques. Binary mixture permeation also can be well predicted through single-component adsorption parameters. (C) 2015 Elsevier B.V. All rights reserved.
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