CO2 separation of fluorinated 6FDA-based polyimides, performance-improved ZIF-incorporated mixed matrix membranes and gas permeability model evaluations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43925839" target="_blank" >RIV/60461373:22310/22:43925839 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/22:43925839
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2213343722014841" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343722014841</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jece.2022.108611" target="_blank" >10.1016/j.jece.2022.108611</a>
Alternative languages
Result language
angličtina
Original language name
CO2 separation of fluorinated 6FDA-based polyimides, performance-improved ZIF-incorporated mixed matrix membranes and gas permeability model evaluations
Original language description
In this study, we compare a newly introduced high free volume fluorinated 6FDA-polyimide, namely 6FDA-bisP, with excellent gas separation properties (CO2 permeability, PCO2 of 35.3 Barrer; CO2/CH4 selectivity, alpha CO2/CH4 of 25.5) to the well-investigated, lower free volume 6FDA-ODA (PCO2 = 25.9 Barrer; alpha CO2/CH4 = 20.6). Their gas separation performances were improved in the form of mixed matrix membranes (MMMs) with size sieving zeolitic imidazolate framework (ZIF-8, particle range of <160 nm) addition between 5 and 20 wt% loadings. XRD, BET, FTIR, TGA, DSC, SEM, and TEM were used to characterize the nanoparticles and MMMs. Solid density was obtained from He pycnometry analysis (pressurized cycle test between 2 and 20 bar at 20 <degrees>C) to calculate the free fractional volume (FFV). Using an equimolar CO2 and CH4 mixture, gas separation performance was evaluated at a constant 5 bar, at 25 degrees C. The optimum loading was achieved at 15 wt% for 6FDA-bisP with MMM performance of PCO2 = 81.2 Barrer and alpha CO2/CH4 = 35.0, whereas 10 wt% for 6FDA-ODA (PCO2 = 42.2 Barrer; alpha CO2/CH4 = 44.8). The MMMs showed superior performances than the currently relevant polymers in industrial separation processes. Four different gas permeability models: Maxwell, Maxwell-Wagner-Sillar, Higuchi and Lewis Nielsen, were utilized to analyze the obtained data.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/LTAUSA19038" target="_blank" >LTAUSA19038: Membrane separation of acid gases from the air and modeling of the separation process</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Environmental Chemical Engineering
ISSN
2213-2929
e-ISSN
2213-3437
Volume of the periodical
10
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
nestrankovano
UT code for WoS article
000875614200004
EID of the result in the Scopus database
2-s2.0-85144301197