Add to ORKGIn this study, the surface acidity of Co and/or Pb doped SBA15 mesoporous catalysts were investigated by both diffuse reflectance fourier transform (DRIFT) infrared spectroscopy and transmission mode fourier transform infrared spectroscopy. Pyridine was used to identify the Brønsted and Lewis acid sites of the surface, at room temperature. From the DRIFT spectrum typical stretching vibrations of isolated terminal silanol (Si-OH) groups were observed for all the catalysts. These silanol group bands dissappeared after pyridine adsorption, indicating that these silanol groups are acidic and serve as chemical adsorption sites for pyridine. Pyridine adsorption on these catalysts revealed that while monometallic additions did not influence the ov...
Amorphous catalytic materials belonging to the Nb2O5-P2O5-SiO2 system were prepared through an origi...
The review presents some key results of infrared investigations of adsorbents and catalysts, which w...
A comprehensive study was conducted on mesoporous MCM-41. Spectroscopic examinations demonstrated th...
Acidity of the oxidic molybdenum catalysts supported on mixed ZrO2-SiO2 and ZrO2-Al2O3 carriers was ...
Co, Pb and CoPb containing SBA15 mesoporous materials were prepared by direct synthesis method. When...
A series of both crystalline (Y zeolites, beta zeolites and mordenites) and amorphous alumino-silica...
Abstract--Infrared spectra of adsorbed pyridine have been used to obtain qualitative information on ...
Acid sites, base sites, and acid–base site pairs on zirconia, magnesia, and hydroxyapatite were inve...
The review presents important results on infrared examination of adsorbents and catalysts, which wer...
In this study, characterization and surface acidity of Siral (SiO2-Al2O3) compounds were investigate...
An IR spectroscopic study is reported of the surface acidity of V-SBA-15 and V-MCF materials with co...
The catalytic properties and acidity of modified MCM-41 with a low Si/Al ratio and 0-95% NH4+ exchan...
The active combustion catalyst that is based on 30 wt % cobalt oxide on mesoporous SBA-15 has been t...
Pyridine is since a long time used as an infrared (IR) molecular probe to characterize the acidity o...
Supported 1 wt% Pt-based catalyst materials have been used as model systems to study pore curvature ...
Amorphous catalytic materials belonging to the Nb2O5-P2O5-SiO2 system were prepared through an origi...
The review presents some key results of infrared investigations of adsorbents and catalysts, which w...
A comprehensive study was conducted on mesoporous MCM-41. Spectroscopic examinations demonstrated th...
Acidity of the oxidic molybdenum catalysts supported on mixed ZrO2-SiO2 and ZrO2-Al2O3 carriers was ...
Co, Pb and CoPb containing SBA15 mesoporous materials were prepared by direct synthesis method. When...
A series of both crystalline (Y zeolites, beta zeolites and mordenites) and amorphous alumino-silica...
Abstract--Infrared spectra of adsorbed pyridine have been used to obtain qualitative information on ...
Acid sites, base sites, and acid–base site pairs on zirconia, magnesia, and hydroxyapatite were inve...
The review presents important results on infrared examination of adsorbents and catalysts, which wer...
In this study, characterization and surface acidity of Siral (SiO2-Al2O3) compounds were investigate...
An IR spectroscopic study is reported of the surface acidity of V-SBA-15 and V-MCF materials with co...
The catalytic properties and acidity of modified MCM-41 with a low Si/Al ratio and 0-95% NH4+ exchan...
The active combustion catalyst that is based on 30 wt % cobalt oxide on mesoporous SBA-15 has been t...
Pyridine is since a long time used as an infrared (IR) molecular probe to characterize the acidity o...
Supported 1 wt% Pt-based catalyst materials have been used as model systems to study pore curvature ...
Amorphous catalytic materials belonging to the Nb2O5-P2O5-SiO2 system were prepared through an origi...
The review presents some key results of infrared investigations of adsorbents and catalysts, which w...
A comprehensive study was conducted on mesoporous MCM-41. Spectroscopic examinations demonstrated th...