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

Paper ID Volume ID Publish Year Pages File Format Full-Text
44039 46000 2006 4 PDF Available
Title
A solid acid of tungsta-niobia more active than aluminosilicates for decompositions of cumene, ethylbenzene, and toluene
Abstract

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).

Keywords
Solid acid; WO3-Nb2O5; Cracking; Cumene; Ethylbenzene; Toluene; Ethanol; Ar; Adsorption
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A solid acid of tungsta-niobia more active than aluminosilicates for decompositions of cumene, ethylbenzene, and toluene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 310, 17 August 2006, Pages 190–193
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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