Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/140085
Title: Enhancing CO2/CH4 separation performance and mechanical strength of mixed-matrix membrane via combined use of graphene oxide and ZIF-8
Authors: Li, Wen
Samarasinghe, Samarasinghe Arachchige Sulashi Chathushka
Bae, Tae-Hyun
Keywords: Engineering::Chemical engineering::Biochemical engineering
Issue Date: 2018
Source: Li, W., Samarasinghe, S. A. S. C., & Bae, T.-H. (2018). Enhancing CO2/CH4 separation performance and mechanical strength of mixed-matrix membrane via combined use of graphene oxide and ZIF-8. Journal of Industrial and Engineering Chemistry, 67, 156-163. doi:10.1016/j.jiec.2018.06.026
Journal: Journal of Industrial and Engineering Chemistry
Abstract: High-performance mixed-matrix membranes that comprise both zeolitic imidazolate framework-8 (ZIF-8) and graphene oxide (GO) were synthesized with a solution casting technique to realize excellent CO2/CH4 separation. The incorporation of ZIF-8 nanocrystals alone in ODPA-TMPDA polyimide can be used to significantly enhance CO2 permeability compared with that of pure ODPA-TMPDA. Meanwhile, the addition of a GO nanostack alone in ODPA-TMPDA contributes to improved CO2/CH4 selectivity. Hence, a composite membrane that contains both fillers displays significant enhancements in CO2 permeability (up to 60%) and CO2/CH4 selectivity (up to 28%) compared with those of pure polymeric membrane. Furthermore, in contrast to the ZIF-8 mixed-matrix membrane, which showed decreased mechanical stability, it was found that the incorporation of GO could improve the mechanical strength of mixed-matrix membranes. Overall, the synergistic effects of the use of both fillers together are successfully demonstrated in this paper. Such significant improvements in the mixed-matrix membrane's CO2/CH4 separation performance and mechanical strength suggest a feasible and effective approach for potential biogas upgrading and natural gas purification.
URI: https://hdl.handle.net/10356/140085
ISSN: 1226-086X
DOI: 10.1016/j.jiec.2018.06.026
Rights: © 2018 The Korean Society of Industrial and Engineering Chemistry (published by Elsevier B.V.). All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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