Metal palladium dispersed inside macroporous ion-exchange resins: rotational and translational mobility inside the polymer network

被引：10

作者：

D'Archivio, AA

Galantini, L

Tettamanti, E

Panatta, A

Corain, B

机构：

[1] Dipartimento Chim Ingn Chim & Mat, I-67010 Coppito, Italy

[2] Univ Aquila, Dipartimento Fis, I-67010 Coppito, Italy

[3] Univ Aquila, INFM, I-67010 Coppito, Italy

[4] CNR, Ctr Studio Stabilita & Reattivita Composti Coordi, I-35131 Padua, Italy

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2000年 / 157卷 / 1-2期

关键词：

palladium; macroporous polymer supports; ion exchangers; rotational and translational mobility; swollen state;

D O I：

10.1016/S1381-1169(00)00156-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Commercial macroporous strongly acidic ion-exchange resin (Bayer UCP 118) in its acidic and Na+ forms and a resin/Pd composite were investigated by means of electron spin resonance (ESR) and pulse field gradient spin echo-nuclear magnetic resonance (PGSE-NMR) techniques, to determine their molecular accessibility to 2,2,6,6-tetramethyl-4-oxo-1-oxypiperidine (TEMPONE) dissolved in water and the molecular mobility of both TEMPONE and water inside their accessible domains. The paramagnetic probe and water itself occupy both the micro- and macroporous domains of the resin particles, among which a rapid exchange is observed. (C) 2000 Elsevier Science B.V. All rights reserved.

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收藏

页码：269 / 273

页数：5

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