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Tungsten Oxide Monolayer Loaded on Zirconia: Determination of Acidity Generated on the Monolayer
- Source :
- The Journal of Physical Chemistry - Part B; August 26, 1999, Vol. 103 Issue: 34 p7206-7213, 8p
- Publication Year :
- 1999
-
Abstract
- The benzaldehyde-ammonia titration (BAT) method clarified that the tungsta impregnated on zirconia formed a monolayer and almost completely covered the surface with ca. 4 W nm<SUP>-2</SUP>. Generation of acidity on the monolayer was shown by the water vapor treatment method of ammonia TPD (temperature-programmed desorption). Strength of the acid site was calculated according to the theoretical equation to be ca. 130 kJ mol<SUP>-1</SUP> in adsorption heat of ammonia, which does not correspond to superacidity. The generated acid site was active for skeletal isomerization of butane.
Details
- Language :
- English
- ISSN :
- 15206106 and 15205207
- Volume :
- 103
- Issue :
- 34
- Database :
- Supplemental Index
- Journal :
- The Journal of Physical Chemistry - Part B
- Publication Type :
- Periodical
- Accession number :
- ejs1132365