Impact of Pore Size and Defects on the Selective Adsorption of Acetylene in Alkyne-Functionalized Nickel(II)-Pyrazolate-Based MOFs.

ABSTRACT: C₂ H₂ /CO₂ separation is a highly challenging process as a consequence of their similar physicochemical properties. In this work we have explored, by static and dynamic gas sorption techniques and computational modelling, the suitability of a series of two isoreticular robust Ni(II)pyrazolate-based MOFs, bearing alkyne moieties on the ligand backbones, for C₂ H₂ /CO₂ separation. The results are consistent with high adsorption capacity and selectivity of the essayed systems towards C₂ H₂ molecules. Furthermore, a post-synthetic treatment with KOH ethanolic solution gives rise to linker vacancy defects and incorporation of extraframework potassium ions. Creation of defects is responsible for increased ads

SUBMITTER: Afshariazar F 

PROVIDER: S-EPMC8457162 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature