Adsorption of Polymer-Protected Palladium Nanoparticles on Polystyrene Gel and Their Catalysis.
スポンサーリンク
概要
- 論文の詳細を見る
Adsorption of the palladium nanoparticles protected by poly (<I>N</I>-vinyl-2-pyrrolidone) (PVP) was carried out on polystyrene gel beads (PSt-TA) having trimethylammonium groups in methanol dispersion. The palladium nanoparticles protected by PVP were adsorbed on a highly porous type of PSt-TA (PSt-HPA, average pore size 140 nm), but not adsorbed on a gel type of PSt-TA. The effect of average molecular weight of PVP (<I>M</I><SUB><I>w</I></SUB>: 6000, 25000, 175000, and 574000) on the adsorption of PVP-protected palladium nanoparticles on PSt-HPA was investigated. The amount of PVP-protected palladium nanoparticles adsorbed on PSt-HPA decreased with increasing <I>M</I><SUB><I>w</I></SUB> of PVP. The diameter of palladium nanoparticles including adsorbed layer of PVP was determined by the use of the sedimentation coefficient of the PVP-protected palladium nanoparticle by ultracentrifugation. The diameter increased with increasing <I>M</I><SUB><I>w</I></SUB> of PVP. The PVP-protected palladium nanoparticles adsorbed on PSt-HPA, as a catalyst for hydrogenation of 1, 3-cyclooctadiene to cyclooctane, were easily separated from the reaction mixtures. The nanoparticles maintained the initial activity and selectivity during repeated uses.
- 公益社団法人 高分子学会の論文
公益社団法人 高分子学会 | 論文
- 情報の入口--高分子センサ-とトランスデュ-サ- (情報化社会と高分子)
- 高分子科学最近の進歩--メルトレオロジ-(伸長粘度)
- 高分子系の相分離--特にポリマ-ブレンドについて
- 導電性高分子の磁気緩和--NMRT-1〓1の周波数依存性
- 多機能性高分子の合成 (化学修飾による多機能性高分子)