A solid acid of tungsta-niobia more active than aluminosilicates for decompositions of cumene, ethylbenzene, and toluene

A solid acid of tungsten-niobium oxide was obtained by evaporating the water from a mixed solution of ammonium metatungstate and niobium ammonium oxalate in water in the ratio 7:1 of W to Nb, followed by calcining in air at 400 °C. The catalytic activity of the solid acid for decompositions of tolue...

Full description

Saved in:
Bibliographic Details
Published in:Applied catalysis. A, General General, 2006-08, Vol.310, p.190-193
Main Authors: Hino, Makoto, Kurashige, Mitsuhiko, Matsuhashi, Hiromi, Arata, Kazushi
Format: Article
Language:English
Subjects:
Adsorption
Catalysis
Chemistry
Cracking
Cumene
Ethanol
Ethylbenzene
Exact sciences and technology
General and physical chemistry
Solid acid
Surface physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Toluene
WO 3-Nb 2O 5
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:A solid acid of tungsten-niobium oxide was obtained by evaporating the water from a mixed solution of ammonium metatungstate and niobium ammonium oxalate in water in the ratio 7:1 of W to Nb, followed by calcining in air at 400 °C. The catalytic activity of the solid acid for decompositions of toluene, ethylbenzene, and cumene was higher than those of tungstated zirconia, mordenite, and silica-alumina. The chief ingredient of Nb in the mixture was less effective. The acid strength was estimated by the heat of Ar adsorption to be 18.1 kJ mol −1, the value being coincident with that of H-mordenite (18.3 kJ mol −1).
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2006.05.038