title: Solvent-Driven Gate Opening in MOF-76-Ce: Effect on CO2 Adsorption.
abstract: A cerium-based metal-organic framework with MOF-76 topology has been synthesized by a very simple and fast solvothermal method that has been tested for a one gram yield. Variable-temperature powder XRD and X-ray absorption data, analyzed by Rietveld and multiple-scattering extended X-ray absorption fine-structure methods, revealed high thermal stability and the presence of three different stable structures. X-ray absorption near-edge structure and FTIR spectroscopy probed the presence of cerium(III), which was characterized by coordinatively unsaturated sites that, however, played no major role in carbon dioxide adsorption. The material revealed excellent carbon dioxide adsorption properties: the highest gravimetric capacity of 15 wt% was observed at 1.1 bar in the case of the sample activated at 250 °C in vacuum, whereas the strongest interaction energy of 35 kJ mol(-1) was observed for the sample activated at 150 °C. Negligible nitrogen uptake of the sample activated at 150 °C indicates that this material is a promising candidate for nitrogen/carbon dioxide separation purposes.
authors.affiliation: Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15, 10135 and Via P. Giuria 7, 10125, Turin, Italy.
authors.forename: Jayashree
authors.initials: J
authors.lastname: Ethiraj
authors.affiliation: Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15, 10135 and Via P. Giuria 7, 10125, Turin, Italy. francesca.bonino@unito.it.
authors.forename: Francesca
authors.identifier: http://orcid.org/0000-0002-6822-6685
authors.initials: F
authors.lastname: Bonino
authors.affiliation: Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15, 10135 and Via P. Giuria 7, 10125, Turin, Italy.|Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Lucini 3, 22100-, Como, Italy.
authors.forename: Jenny G
authors.initials: JG
authors.lastname: Vitillo
authors.affiliation: Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15, 10135 and Via P. Giuria 7, 10125, Turin, Italy.|Southern Federal University, Zorge Street 5, 344090, Rostov-on-Don, Russia.
authors.forename: Kirill A
authors.initials: KA
authors.lastname: Lomachenko
authors.affiliation: Southern Federal University, Zorge Street 5, 344090, Rostov-on-Don, Russia.|Department of Chemistry, CrisDi Centre for Crystallography, University of Turin, Via P. Giuria 7, 10125, Turin, Italy.
authors.forename: Carlo
authors.initials: C
authors.lastname: Lamberti
authors.affiliation: inGAP Centre of Research-Based Innovation, Department of Chemistry, University of Oslo, SemSaelandsvei 26, 0315, Oslo, Norway.
authors.forename: Helge
authors.initials: H
authors.lastname: Reinsch
authors.affiliation: inGAP Centre of Research-Based Innovation, Department of Chemistry, University of Oslo, SemSaelandsvei 26, 0315, Oslo, Norway.
authors.forename: Karl Petter
authors.initials: KP
authors.lastname: Lillerud
authors.affiliation: Department of Chemistry, NIS and INSTM Reference Centre, University of Turin, Via G. Quarello 15, 10135 and Via P. Giuria 7, 10125, Turin, Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Bordiga
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry*; D002563:Cerium / Q000737:chemistry*; D033362:Powder Diffraction; D012997:Solvents / Q000737:chemistry*; D056928:X-Ray Absorption Spectroscopy
chemical_list: D012997:Solvents; D002245:Carbon Dioxide; D002563:Cerium
keywords: X-ray diffraction; adsorption; carbon dioxide capture; cerium; metal-organic frameworks