Realizing the Impact of the Intermediate Layer Structure on the CO2/CH4 Separation Performance of Carbon Molecular Sieving Membranes: Insights from Experimental Synthesis and Molecular Simulation.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F21%3A00541781" target="_blank" >RIV/67985858:_____/21:00541781 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0319551" target="_blank" >http://hdl.handle.net/11104/0319551</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2021.118627" target="_blank" >10.1016/j.seppur.2021.118627</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Realizing the Impact of the Intermediate Layer Structure on the CO2/CH4 Separation Performance of Carbon Molecular Sieving Membranes: Insights from Experimental Synthesis and Molecular Simulation.

Popis výsledku v původním jazyce

This work is a continuation of our previous study investigating the role of the intermediate layer in carbon molecular sieve membrane (CMSM) formation and its impact on the gas separation performance. Herein, the effect of key preparation variables of CMS/TiO2 membrane prepared from the polyetherimide (PEI) precursor on the membrane’s structure and CO2/CH4 separation quality was studied. A set of CMS/TiO2/Al2O3 membranes produced under different conditions (pH of the sol-gel for the intermediate TiO2 layer preparation, the TiO2 interlayer thickness and the carbon separation layer thickness) was prepared, characterized by the AFM, FE-SEM and EDXS methods and tested for CO2/CH4 separation efficiency. In addition, a molecular simulation was applied to investigate the effect of intermediate TiO2 layer. All prepared membranes had good separation quality (the separation factor between 37 and 65). The best results for membranes with the thickest TiO2 interlayer prepared at pH = 5 were identified, notably, membrane samples with the thin defect free carbon separation layer achieved the best balance of permeance vs. selectivity and exceeded the Robeson upper bound. The molecular simulation results support the finding of the intermediate layer plays a vital role for the synthesis of gas separation membranes.

Název v anglickém jazyce

Realizing the Impact of the Intermediate Layer Structure on the CO2/CH4 Separation Performance of Carbon Molecular Sieving Membranes: Insights from Experimental Synthesis and Molecular Simulation.

Popis výsledku anglicky

This work is a continuation of our previous study investigating the role of the intermediate layer in carbon molecular sieve membrane (CMSM) formation and its impact on the gas separation performance. Herein, the effect of key preparation variables of CMS/TiO2 membrane prepared from the polyetherimide (PEI) precursor on the membrane’s structure and CO2/CH4 separation quality was studied. A set of CMS/TiO2/Al2O3 membranes produced under different conditions (pH of the sol-gel for the intermediate TiO2 layer preparation, the TiO2 interlayer thickness and the carbon separation layer thickness) was prepared, characterized by the AFM, FE-SEM and EDXS methods and tested for CO2/CH4 separation efficiency. In addition, a molecular simulation was applied to investigate the effect of intermediate TiO2 layer. All prepared membranes had good separation quality (the separation factor between 37 and 65). The best results for membranes with the thickest TiO2 interlayer prepared at pH = 5 were identified, notably, membrane samples with the thin defect free carbon separation layer achieved the best balance of permeance vs. selectivity and exceeded the Robeson upper bound. The molecular simulation results support the finding of the intermediate layer plays a vital role for the synthesis of gas separation membranes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GC19-23760J" target="_blank" >GC19-23760J: Vývoj nových organicko-anorganických kompozitních materiálů na bázi dendrimerů jako efektivních sorbentů plynů a par</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Separation and Purification Technology

ISSN

1383-5866

e-ISSN

1873-3794

Svazek periodika

269

Číslo periodika v rámci svazku

15 AUG

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

118627

Kód UT WoS článku

000652641600003

EID výsledku v databázi Scopus

2-s2.0-85104287819