Adsorption studies on ordered mesoporous materials (MCM-41)

J.J. Jänchen, M.C.M. Busio, M. Hintze, H. Stach, J.H.C. Hooff, van

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

Samenvatting

Ordered mesoporous materials, MCM-41, with varying Si/Al ratios have been synthesised and characterised by adsorption, XRD, NMR, and FTIR measurements. 27Al MAS NMR shows four-fold co-ordination of Al incorporated into the structure. The combined study by microcalorimetry and FTIR, using acetonitrile as probe shows a few strong Lewis sites and only weak Brønsted acidity. The physisorption properties were analysed by N2, n-hexane, benzene, acetonitrile, methanol and water adsorption using microcalorimetry and isotherm measurements. MCM-41 shows adsorption behaviour of a well-defined mesoporous molecular sieve. The heat of adsorption of a non-polar molecule is mainly determined by the pore diameter of the porous material. A characteristic feature of all applied adsorptives is capillary condensation. Whereas isotherms of water are completely irreversible and acetonitrile shows a small hysteresis, isotherms of the non-polar benzene, n-hexane, and nitrogen are completely reversible.
Originele taal-2Engels
TitelProgress in zeolite and microporous materials : proceedings of the 11th International Zeolite Conference, Seoul, Korea, August 12-17, 1996
RedacteurenH. Chon
Plaats van productieAmsterdam
UitgeverijElsevier
Pagina's1731-1738
ISBN van geprinte versie0-444-82344-1
DOI's
StatusGepubliceerd - 1996
Evenement11th International Zeolite conference - Seoul, Noord-Korea
Duur: 12 aug. 199617 aug. 1996
Congresnummer: 11

Publicatie series

NaamStudies in Surface Science and Catalysis
Volume105
ISSN van geprinte versie0167-2991

Congres

Congres11th International Zeolite conference
Verkorte titelIZC
Land/RegioNoord-Korea
StadSeoul
Periode12/08/9617/08/96
Ander11th International Zeolite conference, Seoul, Korea, 12-17-August 1996

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