CHARACTERIZATION OF VANADIA-SILICA AND TITANIA-SILICA AEROGELS AND XEROGELS BY ACID-BASE PROBE REACTIONS

Authors
MOLNAR A BARTOK M SCHNEIDER M BAIKER A
Citation
A. Molnar et al., CHARACTERIZATION OF VANADIA-SILICA AND TITANIA-SILICA AEROGELS AND XEROGELS BY ACID-BASE PROBE REACTIONS, Catalysis letters, 43(1-2), 1997, pp. 123-126
Citations number
21
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
43
Issue
1-2
Year of publication
1997
Pages
123 - 126
Database
ISI
SICI code
1011-372X(1997)43:1-2<123:COVATA>2.0.ZU;2-E
Abstract
The acid-base properties of 10 wt% V2O5-SiO2 and 10 wt% TiO2-SiO2 bina ry mixed oxide aero- and xerogels were determined by studying the tran sformation of methyloxirane and 1-butane. The transformations (the iso merization of methyloxirane to propanal and the double-bond migration of 1-butene to form isomeric 2-butenes) indicate that all samples cont ain mainly acidic sites. Correlations are shown to exist between heter oconnectivity (derived from FTIR analysis) in conjunction with the tex tural properties and the catalytic performance.