A series of four novel alkaline earth metal-organic frameworks constructed of Ca(II), Sr(II), Ba(II) ions and tetrahedral MTB linker: structural diversity, stability study and low/high-pressure gas adsorption properties

Kód výsledku v IS VaVaI

RIV/00216208:11310/20:10415810 - isvavai.cz

Výsledek na webu

https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=TWCg1SZU1i

DOI - Digital Object Identifier

10.1039/d0ra05145d

Jazyk výsledku

angličtina

Název v původním jazyce

A series of four novel alkaline earth metal-organic frameworks constructed of Ca(II), Sr(II), Ba(II) ions and tetrahedral MTB linker: structural diversity, stability study and low/high-pressure gas adsorption properties

Popis výsledku v původním jazyce

A series of four novel microporous alkaline earth metal-organic frameworks (AE-MOFs) containing methanetetrabenzoate linker (MTB) with composition {[Ca(4)(μ(8)-MTB)(2)] . 2DMF . 4H2O}(n)(UPJS-6), {[Ca(4)(μ(4)-O)(μ(8)-MTB)(3/2)(H2O)(4)] . 4DMF . 4H2O}(n)(UPJS-7), {[Sr(3)(μ(7)-MTB)(3/2)] . 4DMF . 7H2O}(n)(UPJS-8) and {[Ba(3)(μ(7)-MTB)(3/2)(H2O)(6)] . 2DMF . 4H2O}(n)(UPJS-9) (UPJS = University of Pavol Jozef Safarik) have been successfully prepared and characterized. The framework stability and thermal robustness of prepared materials were investigated using thermogravimetric analysis (TGA) and high-energy powder X-ray diffraction (HE-PXRD). MOFs were tested as adsorbents for different gases at various pressures and temperatures. Nitrogen and argon adsorption showed that the activated samples have moderate BET surface areas: 103 m(2)g(-1)(N(2))/126 m(2)g(-1)(Ar) for UPJS-7'', 320 m(2)g(-1)(N(2))/358 m(2)g(-1)(Ar) for UPJS-9'' and UPJS-8'' adsorbs only a limited amount of N(2) and Ar. It should be noted that all prepared compounds adsorb carbon dioxide with storage capacities ranging from 3.9 to 2.4 wt% at 20 degrees C and 1 atm, and 16.4-13.5 wt% at 30 degrees C and 20 bar. Methane adsorption isotherms show no adsorption at low pressures and with increasing pressure the storage capacity increases to 4.0-2.9 wt% of CH(4) at 30 degrees C and 20 bar. Compounds displayed the highest hydrogen uptake of 3.7-1.8 wt% at -196 degrees C and 800 Torr among MTB containing MOFs.

Název v anglickém jazyce

A series of four novel alkaline earth metal-organic frameworks constructed of Ca(II), Sr(II), Ba(II) ions and tetrahedral MTB linker: structural diversity, stability study and low/high-pressure gas adsorption properties

Popis výsledku anglicky

A series of four novel microporous alkaline earth metal-organic frameworks (AE-MOFs) containing methanetetrabenzoate linker (MTB) with composition {[Ca(4)(μ(8)-MTB)(2)] . 2DMF . 4H2O}(n)(UPJS-6), {[Ca(4)(μ(4)-O)(μ(8)-MTB)(3/2)(H2O)(4)] . 4DMF . 4H2O}(n)(UPJS-7), {[Sr(3)(μ(7)-MTB)(3/2)] . 4DMF . 7H2O}(n)(UPJS-8) and {[Ba(3)(μ(7)-MTB)(3/2)(H2O)(6)] . 2DMF . 4H2O}(n)(UPJS-9) (UPJS = University of Pavol Jozef Safarik) have been successfully prepared and characterized. The framework stability and thermal robustness of prepared materials were investigated using thermogravimetric analysis (TGA) and high-energy powder X-ray diffraction (HE-PXRD). MOFs were tested as adsorbents for different gases at various pressures and temperatures. Nitrogen and argon adsorption showed that the activated samples have moderate BET surface areas: 103 m(2)g(-1)(N(2))/126 m(2)g(-1)(Ar) for UPJS-7'', 320 m(2)g(-1)(N(2))/358 m(2)g(-1)(Ar) for UPJS-9'' and UPJS-8'' adsorbs only a limited amount of N(2) and Ar. It should be noted that all prepared compounds adsorb carbon dioxide with storage capacities ranging from 3.9 to 2.4 wt% at 20 degrees C and 1 atm, and 16.4-13.5 wt% at 30 degrees C and 20 bar. Methane adsorption isotherms show no adsorption at low pressures and with increasing pressure the storage capacity increases to 4.0-2.9 wt% of CH(4) at 30 degrees C and 20 bar. Compounds displayed the highest hydrogen uptake of 3.7-1.8 wt% at -196 degrees C and 800 Torr among MTB containing MOFs.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

EF15_003/0000417: Centrum pro cílenou syntézu a aplikace perspektivních materiálů

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

54

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

32323-32334

Kód UT WoS článku

000567492100006

EID výsledku v databázi Scopus

2-s2.0-85090770758