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Nitrogen-enriched flexible metal-organic framework for CO2 adsorption.
Lancheros, Andrés; Goswami, Subhadip; Zarate, Ximena; Schott, Eduardo; Hupp, Joseph T.
Afiliación
  • Lancheros A; Department of Inorganic Chemistry, Faculty of Chemistry and Pharmacy, UC Energy Center, Center for Research in Nanotechnology and Advanced Materials (CIEN-UC), Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile. aflancheros@uc.cl.
  • Goswami S; ANID - Millennium Science Initiative Program - Millennium Nuclei on Catalytic Process Towards Sustainable Chemistry (CSC), Chile.
  • Zarate X; Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
  • Schott E; Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
  • Hupp JT; Institute of Applied Sciences, Faculty of Engineering, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Santiago, Chile.
Dalton Trans ; 53(33): 14028-14036, 2024 Aug 20.
Article en En | MEDLINE | ID: mdl-39105635
ABSTRACT
A novel MOF named [Zn2(L)(DMF)] was synthesized using solvothermal methods from the reaction of the new linker (4,4',4''-(4,4',4''-(benzene-1,3,5-triyltris(methylene))tris(3,5-dimethyl-1H-pyrazole-4,1-diyl))tribenzoic acid) and Zn(NO3)2·6H2O. This new MOF was characterized by means of different techniques powder X-ray diffraction, N2 adsorption and desorption isotherms, thermogravimetric analysis, and scanning electron microscopy. Furthermore, suitable crystals were obtained, which allowed us to perform the X-Ray structure determination of this MOF. The capability of these new MOF to adsorb CO2 at different temperatures was measured and its isosteric enthalpy of adsorption was calculated. The novel MOF shows an uncommon node composed of a Zn3(-COO)6(DMF)2, and the asymmetric unit contains one crystallographically independent linker, one DMF molecule, and two Zn atoms. The [Zn2(L)(DMF)] MOF is a microporous material with high crystallinity and stability up to 250 °C. The multiple nitrogenated pyrazole linkers in its framework enhance its CO2 adsorption capabilities. This material exhibits a low CO2 isosteric enthalpy of adsorption (Hads), comparable to previously reported values for similar nitrogenated materials. All the observed CO2 adsorption capacities were further supported by DFT calculations.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Dalton Trans Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Chile

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Dalton Trans Asunto de la revista: QUIMICA Año: 2024 Tipo del documento: Article País de afiliación: Chile
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