Investigation of structural charge transfer in zeolites by ultraviolet spectroscopy

Journal Article · Thu Jan 07 04:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100390a019· OSTI ID:5288530

Garbowski, E D; Mirodatos, C

Charge-transfer processes in various zeolites (faujasite, mordenite, ZSM5, erionite, and offretite) are evidenced by means of UV spectroscopy. UV bands at 240 and 320 nm are assigned to two different Al-O units. The band at 240 nm, present whatever the zeolite and whatever the chemical or thermal treatment, is related to framework Al-O units which are ''inert'' toward catalysis and easily removed by dealumination or dehydroxylation. The band at 320 nm, more stable toward dealumination and dehydroxylation, is specifically detected or significantly enhanced for catalytically active samples (methanol conversion, hydrocarbon cracking, and disproportionation). This band could be related to oxoaluminum structures inside the zeolite matrix.

• Research Organization: Inst. de Recherches sur la Catalyse, Villeurbanne, France
• OSTI ID: 5288530
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:1; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHARGE EXCHANGE
DATA
EXPERIMENTAL DATA
INFORMATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
MINERALS
MOLECULAR STRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SPECTRA
ULTRAVIOLET SPECTRA
ZEOLITES