Preparation of a Platinum and Palladium/Polyimide Nanocomposite Film as a Precursor of Metal-Doped Carbon Molecular Sieve Membrane via Supercritical Impregnation

The synthesis of a Pt- and Pd-nanoparticle-dispersed polyimide film as a precursor for the preparation of a metal-doped carbon molecular sieve (CMS) membrane for hydrogen separation has been performed. Impregnation of Pt(II) acetylacetonate and Pd(II) acetylacetonate dissolved in supercritical CO2 y...

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Bibliographic Details
Published in:Chemistry of materials 2004-06, Vol.16 (12), p.2363-2368
Main Authors: Yoda, Satoshi, Hasegawa, Atsushi, Suda, Hiroyuki, Uchimaru, Yuko, Haraya, Kenji, Tsuji, Tomoya, Otake, Katsuto
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
General and physical chemistry
Physicochemistry of polymers
Physics
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Summary:The synthesis of a Pt- and Pd-nanoparticle-dispersed polyimide film as a precursor for the preparation of a metal-doped carbon molecular sieve (CMS) membrane for hydrogen separation has been performed. Impregnation of Pt(II) acetylacetonate and Pd(II) acetylacetonate dissolved in supercritical CO2 yielded Pt and Pd nanoparticles (diameters 12 and 5 nm, respectively) that were highly dispersed inside polyimide films under optimized conditions. The impregnation temperature and varieties of polyimide films strongly influenced the dispersion of the metal particles. The Pd-doped CMS membrane was successfully prepared from the polyimide and Pd(II) acetylacetonate composite. It showed good hydrogen separation performance.
ISSN:0897-4756
1520-5002
DOI:10.1021/cm0349250