Title of article :
Acid–base properties of supported gallium oxide catalysts
Author/Authors :
A.L Petre، نويسنده , , A Auroux، نويسنده , , P Gélin، نويسنده , , M Caldararu، نويسنده , , N.I. Ionescu، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2001
Pages :
9
From page :
177
To page :
185
Abstract :
The acid–base properties of supported gallium oxide catalysts have been investigated by microcalorimetry and FTIR spectroscopy of pyridine (acidity) and CO2 (basicity) adsorption. Pyridine adsorption microcalorimetry has shown that loading supports such as γ-Al2O3, TiO2, and ZrO2 with gallium oxide in a surface concentration close to the theoretical monolayer, resulted in a decrease of the surface acidity of the catalysts compared to that of the supports, while, in the case of SiO2, new Lewis acid sites were created. The number of acid sites for the supported and bulk gallium oxide catalysts was in the following order: Ga2O3/SiO2
Keywords :
Acid–base properties , Adsorption microcalorimetry , Supported gallium oxide catalysts , FTIR spectroscopy
Journal title :
Thermochimica Acta
Serial Year :
2001
Journal title :
Thermochimica Acta
Record number :
1195243
Link To Document :
