Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
MOBILITY OF CYCLOHEXANE IN A MICROPOROUS SILICA SAMPLE - A QUASI-ELASTIC NEUTRON-SCATTERING AND NMR PULSED-FIELD GRADIENT TECHNIQUE STUDY
Autore:
JOBIC H; BEE M; KARGER J; VARTAPETIAN RS; BALZER C; JULBE A;
Indirizzi:
INST RECH CATALYSE,CNRS,2 AVE ALBERT EINSTEIN F-69626 VILLEURBANNE FRANCE UNIV GRENOBLE 1,SPECTROMETRIE PHYS LAB F-38402 ST MARTIN DHERES FRANCE UNIV LEIPZIG,FAK PHYS & GEOWISSENSCH D-04103 LEIPZIG GERMANY RUSSIAN ACAD SCI MOSCOW 117915 RUSSIA ECOLE NATL SUPER CHIM MONTPELLIER,MAT & PROCEDES MEMBRANAIRES LAB,CNRS,UMR 9987 F-34053 MONTPELLIER FRANCE
Titolo Testata:
Journal of membrane science
fascicolo: 1-2, volume: 108, anno: 1995,
pagine: 71 - 78
SICI:
0376-7388(1995)108:1-2<71:MOCIAM>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Keywords:
SILICA; SELF-DIFFUSION; QUASI-ELASTIC NEUTRON SCATTERING; PULSED-FIELD GRADIENT NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
H. Jobic et al., "MOBILITY OF CYCLOHEXANE IN A MICROPOROUS SILICA SAMPLE - A QUASI-ELASTIC NEUTRON-SCATTERING AND NMR PULSED-FIELD GRADIENT TECHNIQUE STUDY", Journal of membrane science, 108(1-2), 1995, pp. 71-78

Abstract

The mobility of cyclohexane in a microporous silica powder has been studied by neutron scattering and NMR techniques at different temperatures and loadings. The silica powder has the same characteristics as the corresponding supported membrane. Self-diffusion coefficients of theorder of 10(-10) m(2) s(-1) are obtained by both techniques at 300 K,the activation energy being ca. 11 kJ mol(-1). The same value was also found for benzene diffusing in the same silica sample, this implies that there are no specific interactions with silica. The dimension of the pores between the voids of the non-porous silica particles is of the order of 1 nm.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:02:19