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Titolo:
Preparation of thin supported MFI membranes by in situ nucleation and secondary growth
Autore:
Algieri, C; Golemme, G; Kallus, S; Ramsay, JDF;
Indirizzi:
Univ Calabria, Dipartimento Ingn Chim & Mat, I-87030 Arcavacata Di Rende, Italy Univ Calabria Arcavacata Di Rende Italy I-87030 cavacata Di Rende, Italy IRMERC, CNR, I-87030 Arcavacata Di Rende, Italy IRMERC Arcavacata Di Rende Italy I-87030 7030 Arcavacata Di Rende, Italy LMPM, UMR 5635 CNRS, Lab Mat & Procedes Membranaires, F-34293 Montpellier,France LMPM Montpellier France F-34293 Membranaires, F-34293 Montpellier,France
Titolo Testata:
MICROPOROUS AND MESOPOROUS MATERIALS
fascicolo: 2-3, volume: 47, anno: 2001,
pagine: 127 - 134
SICI:
1387-1811(200110)47:2-3<127:POTSMM>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
ZEOLITE MEMBRANES; SILICALITE; FILMS;
Keywords:
tubular zeolite membrane; MFI zeolite; in situ nucleation; secondary growth; pure gas permeation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Golemme, G Univ Calabria, Dipartimento Ingn Chim & Mat, Via Pietro Bucci, I-87030 Arcavacata Di Rende, Italy Univ Calabria Via Pietro Bucci Arcavacata Di Rende Italy I-87030
Citazione:
C. Algieri et al., "Preparation of thin supported MFI membranes by in situ nucleation and secondary growth", MICROP M M, 47(2-3), 2001, pp. 127-134

Abstract

Tubular MFI zeolite membranes have been prepared in two steps with a modification of the secondary growth method. The first synthetic step is only devoted to the in situ nucleation of the molecular sieve, directly on the surface of the tubular ceramic UF support. and the bulk of the membrane is then grown on it under different conditions. The right choice of the syntheticparameters (composition of the synthetic clear solutions, temperature) enables one to obtain membranes with high gas permeability and sustained selectivity. The preliminary gas transport results and the morphology are compared with the ones from a membrane obtained in one step: permeability increases by almost one order of magnitude. SEM observations indicate the presenceof a very thin (1-2 mum) MFI zeolite layer on the tubular support. The method illustrated in this work is an easy way to skip the deposition of pre-formed nano-sized crystals on tubular supports before the secondary growth of the MFI membrane. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 09:27:48