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    KFeSbTe3: A quaternary chalcogenide aerogel for preferential adsorption of polarizable hydrocarbons and gases

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    Type
    Article
    Authors
    Ahmed, Ejaz
    Rothenberger, Alexander
    KAUST Department
    Chemical Science Program
    KAUST Solar Center (KSC)
    Physical Science and Engineering (PSE) Division
    Date
    2015
    Permanent link to this record
    http://hdl.handle.net/10754/563960
    
    Metadata
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    Abstract
    The first telluride-based quaternary aerogel KFeSbTe3 is synthesized by a sol-gel metathesis reaction between Fe(OAc)2 and K3SbTe3 in dimethyl formamide. The aerogel has an exceptionally large surface area 652 m2 g-1 which is amongst the highest reported for chalcogenide-based aerogels. This predominantly mesoporous material shows preferential adsorption for toluene vapors over cyclohexane or cyclopentane and CO2 over CH4 or H2. The remarkably high adsorption capacity for toluene (9.31 mmol g-1) and high selectivity for gases (CO2/H2: 121 and CO2/CH4: 75) suggest a potential use of such materials in adsorption-based separation processes for the effective purification of hydrocarbons and gases. © The Royal Society of Chemistry 2015.
    Citation
    Ahmed, E., & Rothenberger, A. (2015). KFeSbTe3: a quaternary chalcogenide aerogel for preferential adsorption of polarizable hydrocarbons and gases. Journal of Materials Chemistry A, 3(15), 7786–7792. doi:10.1039/c4ta06957a
    Sponsors
    We wish to thank Mr V. Q. Wang for TEM images and Dr M. N. Hedhili for XPS measurements. This research was supported by the King Abdullah University of Science and Technology (KAUST) baseline funding.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Journal of Materials Chemistry A
    DOI
    10.1039/c4ta06957a
    ae974a485f413a2113503eed53cd6c53
    10.1039/c4ta06957a
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Solar Center (KSC)

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