Ethene/Ethane (C2H4/C2H6) Separation through an Inorganic–Organic Hybrid Membrane Containing Silver(I) Ions as Olefin Carriers, Using Poly(N‐vinylpyrrolidone) as a Mediation Agent
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Medientyp:
E-Artikel
Titel:
Ethene/Ethane (C2H4/C2H6) Separation through an Inorganic–Organic Hybrid Membrane Containing Silver(I) Ions as Olefin Carriers, Using Poly(N‐vinylpyrrolidone) as a Mediation Agent
Beteiligte:
Su, Caili;
Kuraoka, Koji;
Yazawa, Tetsuo
Erschienen:
Wiley, 2001
Erschienen in:Journal of the American Ceramic Society
Beschreibung:
<jats:p>Novel inorganic–organic membranes that contained Ag<jats:sup>+</jats:sup> ions as olefin carriers were prepared using sol–gel and dip‐coating processes. The permeance of the membranes for nitrogen, helium, ethane (C<jats:sub>2</jats:sub>H<jats:sub>6</jats:sub>), and ethene (C<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub>) were evaluated using the single‐gas permeation method at temperatures of 298, 373, and 423 K. The results showed that the selectivity of the membranes to C<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub> against C<jats:sub>2</jats:sub>H<jats:sub>6</jats:sub> increased as the measurement temperature increased, because the decomplexation rate of C<jats:sub>2</jats:sub>H<jats:sub>4</jats:sub> molecules from Ag<jats:sup>+</jats:sup> sites is enhanced by increases in the temperature. Fourier transform infrared spectrophotometry of the hybrid membranes and the performance of the membranes at 373 and 423 K indicated that poly(<jats:italic>N</jats:italic>‐vinylpyrrolidone) (PVP) had a role in increasing the flexibility of the inorganic network and also served as a mediation agent to fix Ag<jats:sup>+</jats:sup> ions in the polymer segments, because of the coordination interaction between the Ag<jats:sup>+</jats:sup> ions and the PVP.</jats:p>