TY - JOUR
T1 - Leaching in Specific Facets of ZIF-67 and ZIF-L Zeolitic Imidazolate Frameworks During the CO2 Cycloaddition with Epichlorohydrin
AU - Delgado-Marín, Jose J.
AU - Rendón-Patiño, Alejandra
AU - Velisoju, Vijay Kumar
AU - Kumar, Gadde Sathish
AU - Zambrano, Naydu
AU - Rueping, Magnus
AU - Gascón, Jorge
AU - Castaño, Pedro
AU - Narciso, Javier
AU - Ramos-Fernandez, Enrique V.
N1 - Funding Information:
The authors acknowledge financial support by Ministerio de Ciencia e Innovación (PID2020-116998RB-I00), Ministerio de Educación y Formación Profesional (PRX21/00407), Conselleria de Innovacion, Universidades, Ciencia y Sociedad Digital (CIPROM/2021/022 and MFA/2022/057), and the King Abdullah University of Science and Technology (KAUST). This study forms part of the Advanced Materials Program and was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and by Generalitat Valenciana
Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/1/24
Y1 - 2023/1/24
N2 - Zeolitic imidazolate frameworks (ZIFs) have been profusely used as catalysts for inserting CO2 into organic epoxides (i.e., epichlorohydrin) through cycloaddition. Here, we demonstrate that these materials suffer from irreversible degradation by leaching. To prove this, we performed the reactions and analyzed the final reaction mixtures by elemental analysis and the resulting materials by different microscopies. We found that the difference in catalytic activity between three ZIF-67 and one ZIF-L catalysts was related to the rate at which the materials degraded. Particularly, the {100} facet leaches faster than the others, regardless of the material used. The catalytic activity strongly depended on the amount of leached elements in the liquid phase since these species are extremely active. Our work points to the instability of these materials under relevant reaction conditions and the necessity of additional treatments to improve their stability.
AB - Zeolitic imidazolate frameworks (ZIFs) have been profusely used as catalysts for inserting CO2 into organic epoxides (i.e., epichlorohydrin) through cycloaddition. Here, we demonstrate that these materials suffer from irreversible degradation by leaching. To prove this, we performed the reactions and analyzed the final reaction mixtures by elemental analysis and the resulting materials by different microscopies. We found that the difference in catalytic activity between three ZIF-67 and one ZIF-L catalysts was related to the rate at which the materials degraded. Particularly, the {100} facet leaches faster than the others, regardless of the material used. The catalytic activity strongly depended on the amount of leached elements in the liquid phase since these species are extremely active. Our work points to the instability of these materials under relevant reaction conditions and the necessity of additional treatments to improve their stability.
UR - http://www.scopus.com/inward/record.url?scp=85146003564&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.2c03374
DO - 10.1021/acs.chemmater.2c03374
M3 - Article
C2 - 37520114
AN - SCOPUS:85146003564
SN - 0897-4756
VL - 35
SP - 692
EP - 699
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 2
ER -