Surface characterisation of zirconium-doped mesoporous silica

Zr‐TUD‐1: A Lewis Acidic, Three‐Dimensional, Mesoporous, Zirconium‐Containing Catalyst

“…[56] The binding energy of O 1s 1/2 observed at 532.4 AE 0.2 eV is also significantly higher than both ZrO 2 (530.2 eV) and ZrSiO 4 (531.4 eV), [36,56] but approaches reported values of SiO 2 with values of about 532.9 eV as presented in the National Institute of Standards and Technology (NIST) X-ray Photoelectron Spectroscopy Database. [57] This is in line with the fact that all samples contain significantly more Si-O-Si bridges than Si-O-Zr bridges.…”

n-Butane Isomerization Catalyzed by Sulfated Zirconia Nanocrystals Supported on Silica or γ-Alumina

“…Zirconium has been embedded in the walls of MCM-41 [34][35][36][37] and SBA-15 [38]. Sulfated mixed oxides of zirconia and alumina, alumina-supported SZ, and physical mixtures of SZ and γ-alumina were tested for n-butane [38][39][40][41][42] and n-hexane isomerization [43][44][45]; Ptcontaining physical mixtures of SZ and γ-alumina or silica have been tested as catalysts for the hydroisomerizationcracking of n-octane [46].…”

The Synthesis of ZrO2/SiO2 Nanocomposites by the Two‐Step CVD of a Volatile Halogen‐Free Zr Alkoxide in a Fluidized‐Bed Reactor

“…The O 1s binding energy of all the samples is higher than that of pure ZrO 2 (530.4 eV), but still somewhat lower than that of pure SiO 2 (533.0 eV), pointing to the presence of zirconia species strongly interacting with SiO 2 . [31][32][33] Small amounts of carbon (C 1s), possibly resulting from incomplete decomposition of the Zr precursor and from sample transfer contamination (Fig. 3D), were also detected.…”