Delaminated zeolites: Combining the benefits of zeolites and mesoporous materials for catalytic uses

Journal Article · Sun Aug 15 00:00:00 EDT 1999 · Journal of Catalysis

DOI:https://doi.org/10.1006/jcat.1999.2503· OSTI ID:687726

Corma, A; Fornes, V; Martinez-Triguero, J; Pergher, S B ^[1]

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1. Univ. Politecnica de Valencia (Spain). Inst. de Tecnologia Quimica

The delamination of the layered precursor of the MCM-22 zeolite (MWW structure) affords monolayers of a crystalline aluminosilicate with more than 700 m{sup 2}/g of a well defined external surface formed by cups of 0.7 x 0.7 nm. In this layered structure the circular 10-member-ring microporous system is preserved. The resultant material presents the strong acidity and stability characteristic of the zeolites but, at the same time, offers the high accessibility to large molecules characteristic of the amorphous aluminosilicates. The cracking behavior during the process of small and large molecules has been compared with that of the zeolite MCM-22 and pillared laminar precursor MCM-36.

• OSTI ID: 687726
• Journal Information: Journal of Catalysis, Vol. 186, Issue 1; Other Information: PBD: 15 Aug 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ZEOLITES
SURFACE AREA
PORE STRUCTURE
MOLECULAR SIEVES
CATALYTIC EFFECTS
CRACKING