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    Enhancement of CO2 and Toluene Adsorption on a Rare-Earth Chalcophosphate Aerogel by Post Synthetic Modification with PdCl2

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    Type
    Article
    Authors
    Edhaim, Fatimah
    Rothenberger, Alexander
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Science
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Date
    2019-07-07
    Embargo End Date
    2020-01-01
    Permanent link to this record
    http://hdl.handle.net/10754/656277
    
    Metadata
    Show full item record
    Abstract
    The sol-gel metathesis reaction was used to synthesize a new family of aerogels called a rare-earth chalcophosphate aerogel KY(P2S6)2·K+ and the rare-earth metal cations Y3+ connect [P2S6]2– anions to form an amorphous white gel. Supercritical drying of the resulting gel produced porous materials with a BET surface area of 443 m2·g–1. The adsorption properties of the rare-earth chalcophosphate aerogel were studied using volatile organic hydrocarbons (VOCs) and gases as adsorptives. The results showed preferential adsorption of toluene vapor over cyclohexane and cyclopentane vapor. The adsorption capacity toward toluene was 703 mg·g–1. Favored adsorption of CO2 over CH4, N2, or H2 was also observed for the aerogel: KY(P2S6)2 (CO2/H2: 308, CO2/CH4: 67, Co2/N2: 177). Pd doped aerogel showed significant enhancement toward toluene (1291 mg·g–1) for 1 wt % Pd @ KY(P2S6)2, (2064 mg·g–1) for 3 wt % Pd @ KY(P2S6)2 and (1108 mg·g–1) for 5 wt % Pd @ KY(P2S6)2. It also showed a noticeable improvement in the gas selectivity (CO2/H2: 337, CO2/CH4: 85, Co2/N2: 205) for 1 wt % Pd @ KY(P2S6)2, (CO2/H2: 345, CO2/CH4: 109, Co2/N2: 212) for 3 wt % Pd @ KY(P2S6)2 and (CO2/H2: 319, CO2/CH4: 73, Co2/N2: 187) for 5 wt % Pd @ KY(P2S6)2.
    Citation
    Edhaim, F., & Rothenberger, A. (2019). Enhancement of CO2 and Toluene Adsorption on a Rare-Earth Chalcophosphate Aerogel by Post Synthetic Modification with PdCl2. Zeitschrift Für Anorganische Und Allgemeine Chemie, 645(14), 927–933. doi:10.1002/zaac.201900078
    Sponsors
    This work was supported by Saudi Aramco and King Abdullah University of Science and Technology, KAUST.
    Publisher
    Wiley
    Journal
    Zeitschrift fur Anorganische und Allgemeine Chemie
    DOI
    10.1002/zaac.201900078
    Additional Links
    http://doi.wiley.com/10.1002/zaac.201900078
    ae974a485f413a2113503eed53cd6c53
    10.1002/zaac.201900078
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Physical Science and Engineering (PSE) Division; Chemical Science Program

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