Study of Carbon Dioxide Adsorption on Mesoporous Aminopropylsilane-Functionalized Silica and Titania Combining Microcalorimetry and in Situ Infrared Spectroscopy

2009 ◽  
Vol 113 (52) ◽  
pp. 21726-21734 ◽  
Author(s):  
Christina Knöfel ◽  
Céline Martin ◽  
Virginie Hornebecq ◽  
Philip L. Llewellyn
Keyword(s):  
Carbon Dioxide ◽  
Infrared Spectroscopy ◽  
Functionalized Silica ◽  
Carbon Dioxide Adsorption ◽  
In Situ Infrared Spectroscopy ◽  
Silica And Titania

Characterization of Catalytic Supports by Infrared Spectroscopy and ESCA

1982 ◽  
Vol 36 (4) ◽  
pp. 361-368 ◽  
Author(s):  
Larry F. Wieserman ◽  
David M. Hercules
Keyword(s):  
Infrared Spectroscopy ◽  
Surface Area ◽  
Elevated Temperatures ◽  
Silica Alumina ◽  
Free Hydroxyl ◽  
Ft Ir ◽  
Catalytic Supports ◽  
Silica And Titania

This study compares the properties of γ-alumina, silica, and titania using ESCA and in situ FT-IR. The FWHM's of the O1s and metal 2p ESCA peaks increased systematically from titania to γ alumina; the O1s/metal 2p ESCA peak area ratios were nearly equal for γ-alumina and silica. For titania, however, the value was half that obtained for γ-alumina. In situ FT-IR showed hydroxyl bands with increasing frequencies from titania to silica. Alumina and titania form carbonate-type structures after exposure to CO at elevated temperatures. Silica exhibited no additional bands after CO treatment that could be assigned to physically adsorbed CO or carbonate-type structures. At 100°C, there is a direct correlation between the specific surface area and the intensity of infrared absorbance of the free-hydroxyl and the hydrogen-bonded hydroxyl bands for silica. The intensities of the infrared bands due to matrix modes were not affected by surface area.

scholarly journals In situ Infrared Spectroscopy of Iridium Oxide

1987 ◽  
Vol 134 (12) ◽  
pp. 3090-3094 ◽  
Author(s):  
R. O. Lezna ◽  
K. Kunimatsu ◽  
T. Ohtsuka ◽  
N. Sato
Keyword(s):  
Infrared Spectroscopy ◽  
Iridium Oxide ◽  
In Situ Infrared Spectroscopy
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