Acid–Base and Catalytic Properties of Sulfated Mesoporous Titanium Oxide in Glycerol Oligomerization

The structural and spectral characteristics of sulfated spherical mesoporous titanium dioxide (TiO 2 -S), obtained by hydrothermal sol–gel synthesis in the presence of sulfuric acid, are studied by XRD, SEM, BET, and IR spectroscopy. The acid–base and catalytic characteristics of TiO 2 -S and commer...

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Bibliographic Details
Published in:Theoretical and experimental chemistry 2020-07, Vol.56 (3), p.199-204
Main Authors: Telbiz, G. M., Vlasenko, N. V., Didenko, O. Z., Strizhak, P. E.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Dielectric films
Diglycerides
Glycerin
Glycerol
Infrared spectroscopy
Oligomerization
Oligomers
Selectivity
Sol-gel processes
Spectrum analysis
Sulfates
Sulfuric acid
Thin films
Titanium dioxide
Titanium oxides
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Summary:The structural and spectral characteristics of sulfated spherical mesoporous titanium dioxide (TiO 2 -S), obtained by hydrothermal sol–gel synthesis in the presence of sulfuric acid, are studied by XRD, SEM, BET, and IR spectroscopy. The acid–base and catalytic characteristics of TiO 2 -S and commercial TiO 2 in the oligomerization of glycerol are compared. The activation of glycerol on the surface of the catalysts is studied by attenuated total reflectance Fourier IR spectroscopy (ATR-FTIR). It is found the high selectivity for diglycerides in the oligomerization of glycerol is determined by the presence of strong base sites on the surface of TiO 2 -S.
ISSN:0040-5760
1573-935X
DOI:10.1007/s11237-020-09652-4