Porous Ionic Liquids: Structure, Stability, and Gas Absorption Mechanisms

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F21%3A43923026" target="_blank" >RIV/60461373:22340/21:43923026 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202001982" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202001982</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.202001982" target="_blank" >10.1002/admi.202001982</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Porous Ionic Liquids: Structure, Stability, and Gas Absorption Mechanisms

Popis výsledku v původním jazyce

Porous ionic liquids prepared from phosphonium-based ionic liquids and metal-organic frameworks (MOFs) are fluid in large ranges of temperature including ambient. It is shown that the ion pairs are too voluminous to enter the pores of the MOF, so the porous liquids remain several months as suspensions with permanent free volume, capable of absorbing large quantities of gases. The increase in gas absorption, when compared with the pure ionic liquids, is proportional to the amount of porous solid in suspension. Structural features of the MOFs and of the ionic liquids are maintained in the suspensions. Thermodynamic analysis and molecular simulations show that the driving force for gas absorption by the porous ionic liquids is energetic as well as structural being controlled by gas-solid affinity or by the porous liquid free volume. The enthalpy of gas absorption allows easy regeneration of the porous liquid in all cases. The dissolved gases fluidify the porous ionic liquids, different gases having distinct effects on mass transport. The molecular mechanisms that explain the stability of the suspensions and their capacity for gas absorption are identified and point toward easy design rules that will enable numerous applications of these innovative materials as reaction or separation media. © 2021 Wiley-VCH GmbH

Název v anglickém jazyce

Porous Ionic Liquids: Structure, Stability, and Gas Absorption Mechanisms

Popis výsledku anglicky

Porous ionic liquids prepared from phosphonium-based ionic liquids and metal-organic frameworks (MOFs) are fluid in large ranges of temperature including ambient. It is shown that the ion pairs are too voluminous to enter the pores of the MOF, so the porous liquids remain several months as suspensions with permanent free volume, capable of absorbing large quantities of gases. The increase in gas absorption, when compared with the pure ionic liquids, is proportional to the amount of porous solid in suspension. Structural features of the MOFs and of the ionic liquids are maintained in the suspensions. Thermodynamic analysis and molecular simulations show that the driving force for gas absorption by the porous ionic liquids is energetic as well as structural being controlled by gas-solid affinity or by the porous liquid free volume. The enthalpy of gas absorption allows easy regeneration of the porous liquid in all cases. The dissolved gases fluidify the porous ionic liquids, different gases having distinct effects on mass transport. The molecular mechanisms that explain the stability of the suspensions and their capacity for gas absorption are identified and point toward easy design rules that will enable numerous applications of these innovative materials as reaction or separation media. © 2021 Wiley-VCH GmbH

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GJ19-04150Y" target="_blank" >GJ19-04150Y: Kohezní vlastnosti a fázové rovnováhy iontových kapalin studovány přesnými výpočty a experimenty</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

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

2001982

Kód UT WoS článku

000628851600001

EID výsledku v databázi Scopus

2-s2.0-85102418662