CO2/CH4 Separation Performance of Ionic-Liquid-Based Epoxy-Amine Ion Gel Membranes under Mixed Feed Conditions Relevant to Biogas Processing.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F17%3A00472810" target="_blank" >RIV/67985858:_____/17:00472810 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/17:43913928 RIV/60461373:22340/17:43913928

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.memsci.2017.01.016" target="_blank" >http://dx.doi.org/10.1016/j.memsci.2017.01.016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.memsci.2017.01.016" target="_blank" >10.1016/j.memsci.2017.01.016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

CO2/CH4 Separation Performance of Ionic-Liquid-Based Epoxy-Amine Ion Gel Membranes under Mixed Feed Conditions Relevant to Biogas Processing.

Popis výsledku v původním jazyce

The CO2/CH4 separation performance under humidified mixed feed conditions relevant to biogas separation is reported for supported, epoxy-amine-based ion gel membranes containing fixed-site amine facilitated CO2 transport carriers. The chemical composition of the ion gel membranes consists of combination of the bis(epoxide)-IL monomer and trifunctional amine monomer in a mole ratio 3:2 plus either 50 or 75 wt. % free [EMIM][Tf2N], impregnated into a Omnipore™ support film. Prepared samples were examined for fundamental structure/property relationships via permeation and sorption methods. Gas sorption confirmed specific gas interactions, showing elevated CO2 sorption compared to CH4 with increasing equilibrium feed pressure. Single gas permeation demonstrated almost a three-fold increase in CO2 permeability from 195 Barrer for 50 wt. % of free [EMIM][Tf2N] to 525 Barrer for 75 wt. % of ionic liquid while the ideal selectivity α(CO2/CH4) stayed almost the same (20 and 18, respectively). The effects of feed composition, feed pressure, and relative humidity (32% and 54%) on the CO2/CH4 separation performance were elucidated for mixed-gas feeds. Under simulated biogas processing conditions, an increase of CO2/CH4 separation factor from 25 to 35 with increasing humidity and low feed pressure was observed. Such behavior indicates that the fixed-sitecarrier facilitated CO2 transport mechanism enhances also the CO2/CH4 separation performance of studied membranes, as observed for the CO2/N2 mixtures studied previously. This feature also enables them to reach a performance level close to the 2008 Robeson plot upper bound.

Název v anglickém jazyce

CO2/CH4 Separation Performance of Ionic-Liquid-Based Epoxy-Amine Ion Gel Membranes under Mixed Feed Conditions Relevant to Biogas Processing.

Popis výsledku anglicky

The CO2/CH4 separation performance under humidified mixed feed conditions relevant to biogas separation is reported for supported, epoxy-amine-based ion gel membranes containing fixed-site amine facilitated CO2 transport carriers. The chemical composition of the ion gel membranes consists of combination of the bis(epoxide)-IL monomer and trifunctional amine monomer in a mole ratio 3:2 plus either 50 or 75 wt. % free [EMIM][Tf2N], impregnated into a Omnipore™ support film. Prepared samples were examined for fundamental structure/property relationships via permeation and sorption methods. Gas sorption confirmed specific gas interactions, showing elevated CO2 sorption compared to CH4 with increasing equilibrium feed pressure. Single gas permeation demonstrated almost a three-fold increase in CO2 permeability from 195 Barrer for 50 wt. % of free [EMIM][Tf2N] to 525 Barrer for 75 wt. % of ionic liquid while the ideal selectivity α(CO2/CH4) stayed almost the same (20 and 18, respectively). The effects of feed composition, feed pressure, and relative humidity (32% and 54%) on the CO2/CH4 separation performance were elucidated for mixed-gas feeds. Under simulated biogas processing conditions, an increase of CO2/CH4 separation factor from 25 to 35 with increasing humidity and low feed pressure was observed. Such behavior indicates that the fixed-sitecarrier facilitated CO2 transport mechanism enhances also the CO2/CH4 separation performance of studied membranes, as observed for the CO2/N2 mixtures studied previously. This feature also enables them to reach a performance level close to the 2008 Robeson plot upper bound.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Membrane Science

ISSN

0376-7388

e-ISSN

—

Svazek periodika

528

Číslo periodika v rámci svazku

APRIL

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

64-71

Kód UT WoS článku

000395956400007

EID výsledku v databázi Scopus

2-s2.0-85009509174