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dc.creatorFitzgerald, S.en_US
dc.creatorPierce, C.en_US
dc.creatorSchloss, J.en_US
dc.creatorThompson, B.en_US
dc.creatorRowsell, J.en_US
dc.date.accessioned2012-07-09T18:55:32Z
dc.date.available2012-07-09T18:55:32Z
dc.date.issued2012en_US
dc.identifier2012-MJ-11en_US
dc.identifier.urihttp://hdl.handle.net/1811/52195
dc.descriptionAuthor Institution: Department of Physics and Astronomy, Oberlin College; Oberlin, OH 44074; Department of Chemistry and Biochemistry, Oberlin College; Oberlin, OH 44074en_US
dc.description.abstractThere is much interest in a class of materials known as Metal-Organic Frameworks (MOFs). While practical applications center on hydrogen storage and carbon sequestration, these highly porous, crystalline materials also provide an excellent opportunity for performing matrix isolation experiments. In this talk we will present data on MOF-74, a honey-comb structure consisting of metal-oxide units linked by aromatic rings. Infrared spectra show that for a series of different metal cations, Mn$^{2+}$, Fe$^{2+}$, Co$^{2+}$, Ni$^{2+}$, and Zn$^{2+}$ the vibrational modes of adsorbed CO$_{2}$ are all red shifted relative to the gas phase values. In contrast the $\nu_{3}$ mode of CO$_{2}$ adsorbed within the Mg version of MOF-74 is unique in showing a blue shift. It is accompanied by broader sidebands associated with librational or center of mass motion of the adsorbed CO$_{2}$. Spectra obtained below 100 K show the emergence of a second $\nu_{3}$ band indicating a further distortion of the CO$_{2}$ molecule. These results will be discussed in terms of the interaction mechanisms of the different metal cations and in particular the fact that the Mg version of MOF-74 has a very strong affinity for CO$_{2}$ with a binding enenergy of 47 kJ/mol, more than 5 kJ/mol greater than any other MOF.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleVIBRATIONAL SHIFT OF ADSORBED CARBON DIOXIDE WITHIN A METAL-ORGANIC FRAMEWORKen_US
dc.typeArticleen_US
dc.typeImageen_US
dc.typePresentationen_US


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