The peculiarities of the ethylation of toluene and benzene on modified beta zeolites
- Boreskov Institute of Catalysis, Novosibirsk (Russian Federation)
The catalytic activity of Beta zeolites, modified with magnesium, boron, and phosphorous compounds, was studied using benzene and toluene alkylation by ethylene. The concentrations of different types of acid centers in these zeolites were measured using IR spectroscopy of OH groups and adsorbed CO. Ortho-, meta-, and para-isomer distributions of the primary alkylation products of toluene and determined by aromatic substitution rates. But, if the conditions for further isomerization of the product are created by increasing either the reaction temperature or the concentration of strong acid centers in the catalyst, the selectivity ratio among the isomers will be changed and approach the thermodynamic equilibrium distribution. 31 refs., 7 figs., 5 tabs.
- OSTI ID:
- 6763660
- Journal Information:
- Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 146:1; ISSN 0021-9517; ISSN JCTLA5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400 -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METALS
ALKYLATED AROMATICS
ALKYLATION
AROMATICS
BENZENE
BORON
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
ELEMENTS
HETEROGENEOUS CATALYSIS
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNESIUM
MATERIALS
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
PHOSPHORUS
SEMIMETALS
SILICATE MINERALS
SPECTROSCOPY
TOLUENE
ZEOLITES