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1Eurochem Engineering srl, Via Codogno 5 (IT-20139) Milano, Italy
2Eni SpA, Refining & Marketing Manager, Italy
3Department of Chemica Sciences, University FEDERICO II of Naples, Italy
*Corresponding author: E Santacesaria, Eurochem Engineering srl, Via Codogno 5 (IT-20139) Milano, Italy
Submission: April 16, 2020 Published: May 01, 2020
ISSN 2637-8035Volume3 Issue2
Metal alkoxide grafting technique can be used for changing the acid-base and/or the redox properties of the surface of an oxide rich in hydroxyls. The preparation of catalysts by grafting different commercial available alkoxides, such as: Si, Ti, Zr, and V on the surface of oxides, such as: SiO2, Al2O3 and TiO2, is reviewed. The performances of the acid catalysts were evaluated by adequate test reactions such as: methanol dehydration, skeletal isomerization of 1-butene and alkane isomerization and cracking. The redox properties of vanadium based catalysts, obtained by grafting vanadyl alkoxide on SiO2 and TiO2/SiO2 supports, have been tested in reactions, such as: the SCR of NO with NH3, the Oxidative Dehydrogenation (ODH) of ethanol and methanol to formaldehyde and acetaldehyde, the ODH of propane, isobutane and n-butane.
Keywords:Grafting; Metal alkoxides; Silica; Alumina; Titania; Vanadia
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