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Titolo:
Polybenzimidazole as a promising support for metal catalysis: Morphology and molecular accessibility in the dry and swollen state
Autore:
DArchivio, AA; Galantini, L; Biffis, A; Jerabek, K; Corain, B;
Indirizzi:
Univ Aquila, Dipartimento Chim Ingn Chim & Mat, I-67010 Coppito, Italy Univ Aquila Coppito Italy I-67010 ngn Chim & Mat, I-67010 Coppito, Italy Acad Sci Czech Republ, Inst Chem Proc Fundamentals, CR-16502 Prague 6, Czech Republic Acad Sci Czech Republ Prague Czech Republic 6 2 Prague 6, Czech Republic Univ Padua, Dipartimento Chim Inorgan Met Organ & Analit, I-35131 Padua, Italy Univ Padua Padua Italy I-35131 Met Organ & Analit, I-35131 Padua, Italy Univ Padua, Dipartimento Chim Inorgan Met Organ & Analit, CNR, Ctr Studio Stabil & Reatt Composti Coordinaz, I-35131 Padua, Italy Univ Padua Padua Italy I-35131 Composti Coordinaz, I-35131 Padua, Italy
Titolo Testata:
CHEMISTRY-A EUROPEAN JOURNAL
fascicolo: 5, volume: 6, anno: 2000,
pagine: 794 - 799
SICI:
0947-6539(20000303)6:5<794:PAAPSF>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
IMIDAZOLE-CONTAINING POLYMERS; ELECTRON-SPIN-RESONANCE; STERIC EXCLUSION CHROMATOGRAPHY; EPOXIDATION; RESINS; POLYSTYRENE; CYCLOHEXENE; NETWORKS; SPECTRA; MO(VI);
Keywords:
catalysts; catalyst supports; polybenzimidazole beads;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Corain, B Univ Aquila, Dipartimento Chim Ingn Chim & Mat, Via Vetoio,Coppito Due, I-67010 Coppito, Italy Univ Aquila Via Vetoio,Coppito Due Coppito Italy I-67010 Italy
Citazione:
A.A. D'Archivio et al., "Polybenzimidazole as a promising support for metal catalysis: Morphology and molecular accessibility in the dry and swollen state", CHEM-EUR J, 6(5), 2000, pp. 794-799

Abstract

Polybenzimidazole (PBI) in beaded form (250-500 mu m) has been characterized in the dry state by scanning electron microscopy (SEM), BET, and nitrogen porosimetry. In the swollen state, it has been characterized by inverse steric exclusion chromatography (ISEC) in tetrahydrofuran, toluene, and water, by ESR of TEMPONE (2,2,6,6-tetramethyl-4-oxo-1-oxypiperidine). and pulsefield gradient spin echo (PGSE) NMR spectroscopy, toluene, in tetrahydrofuran, ethanol and water. The dry-state results are in good agreement with the ISEC results obtained in tetrahydrofuran, toluene, and water with regard to the 40-80 nm macroporosity. The swelling-dependent surface area and porevolume detected by ISEC in toluene and water reveal the amphiphilic natureof PBI.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 00:12:11