Synthesis and characterization of MCM-22 zeolites for the N2O oxidation of benzene to phenol

D. Meloni (1) , R. Monaci , E. Rombi , Claude Guimon (2) , Hervé Martinez (2) , I. Fechete , E. Dumitriu (3)

1 ENEA - Italian National agency for new technologies, Energy and sustainable economic development [Frascati]
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
3 Tecnical University of Iasi

MCM-22 zeolites with various Si/Al and/or Si/Fe ratios were synthesized and characterized by XRD, microcalorimetry and other techniques. The catalytic activity and selectivity of MCM-22 zeolites were investigated in the gas-phase oxidation of benzene with N2O at 673 K. The oxidation of benzene produces phenol as main product. The influence of the nature of catalysts (i.e., the content of iron, the nature of active sites) on catalytic activity of MCM-22 was investigated. In addition, some results about the nature of coke, which causes the Fe-MCM-22 deactivation, are exposed.

Mots clés: aluminum; Benzene; Catalysis; Chemical analysis; chemical composition; conference paper; hydroxylation; iron; Nitrogen dioxide; oxidation; phenol; Silicon; synthesis; X ray diffraction; zeolite

Domaines: Chimie; Matériaux

D. Meloni, R. Monaci, E. Rombi, Claude Guimon, Hervé Martinez, et al.. Synthesis and characterization of MCM-22 zeolites for the N2O oxidation of benzene to phenol. 142 A, 2002, Studies in Surface Science and Catalysis, 01672991 (ISSN). ⟨hal-01503987⟩