The peculiarities of the ethylation of toluene and benzene on modified beta zeolites

The catalytic activity of Beta zeolites, modified with magnesium, boron, and phosphorus 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. O...

Full description

Saved in:
Bibliographic Details
Published in:Journal of catalysis 1994-03, Vol.146 (1), p.211-217
Main Authors: Romannikov, V.N., Ione, K.G.
Format: Article
Language:English
Subjects:
02 PETROLEUM
020400 > Petroleum-- Processing
ABSORPTION SPECTROSCOPY
ALKALINE EARTH METALS
ALKYLATED AROMATICS
ALKYLATION
AROMATICS
BENZENE
BORON
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
ELEMENTS
HETEROGENEOUS CATALYSIS
HYDROCARBONS
INORGANIC ION EXCHANGERS
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
ION EXCHANGE MATERIALS
MAGNESIUM
MATERIALS
METALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
PHOSPHORUS
SEMIMETALS
SILICATE MINERALS
SPECTROSCOPY 400201 > Chemical & Physicochemical Properties
TOLUENE
ZEOLITES
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The catalytic activity of Beta zeolites, modified with magnesium, boron, and phosphorus 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 are 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.
ISSN:0021-9517
1090-2694
DOI:10.1016/0021-9517(94)90024-8