Bio-additive fuels from glycerol acetalization over metals-containing vanadium oxide nanotubes (MeVOx-NT in which, Me = Ni, Co, or Pt)

The biodiesel production has led to a drastic surplus of glycerol and catalytic conversion of glycerol into value-added products is of great industrial importance. Thus, the acetalization of glycerol with ketone or aldehydes allows the glycerol transformation into bio–additive fuels. In this work, m...

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Bibliographic Details
Published in:Fuel processing technology 2019-02, Vol.184, p.45-56
Main Authors: Pinheiro, Andre Luis G., do Carmo, José Vitor C., Carvalho, Davi C., Oliveira, Alcineia C., Rodríguez-Castellón, Enrique, Tehuacanero-Cuapa, Samuel, Otubo, Larissa, Lang, Rossano
Format: Article
Language:English
Subjects:
Acetalization
Acetone
Additives
Aldehydes
Benzaldehyde
Biodiesel fuels
Biofuels
Butyraldehyde
Catalysts
Catalytic converters
Cobalt
Deactivation
Glycerol
Leaching
Metal oxides
Nanotubes
Porosity
Substrates
Vanadium oxides
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Summary:The biodiesel production has led to a drastic surplus of glycerol and catalytic conversion of glycerol into value-added products is of great industrial importance. Thus, the acetalization of glycerol with ketone or aldehydes allows the glycerol transformation into bio–additive fuels. In this work, metals-containing vanadium oxides nanotubes (MeVOx NT in which, Me = Co, Pt or Ni) have been synthesized with additional internal porosity and tested in the acetalization of glycerol with acetone (AG) for valuable biofuels production. The catalysts showed remarkable performances in the AG reaction. Furthermore, by variation of the composition, catalyst loading and temperature and using distinct substrates (butyraldehyde, furfuraldehyde and benzaldehyde), NiVOxNT is active, being very selective to solketal and reciclable for 4 times in the AG reaction. On the contrary, pure VOx NT easily deactivated due to the structure agent removal during the reaction, which promote the collapse of the tubular structure. The CoVOxNT and PtVOxNT catalysts did not exhibit such a stable structure and easily deactivated in the reaction due to leaching of the metals oxides during the AG. [Display omitted] •Acetalization of glycerol for biofuels production•Metal intercalated into the tubes as Ni2+ or Co2+/Co3+ and PtOx decorating the nanotubes•XPS and HRTEM evidenced V5+/V4+ with the metal nanoparticles deposited on the surface.•Variation of the composition, catalyst loading and temperature and distinct substrates
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2018.11.008