Bio-additive fuels from glycerol acetalization over metals-containing vanadium oxide nanotubes (MeVOx-NT in which, Me = Ni, Co, or Pt)
Por:
Pinheiro A.L.G., do Carmo J.V.C., Carvalho D.C., Oliveira A.C., Rodríguez-Castellón E., Tehuacanero-Cuapa S., Otubo L., Lang R.
Publicada:
1 feb 2019
Resumen:
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.
Filiaciones:
Universidade Federal do Ceará, Departamento de Química Analítica e Físico-Química, Campus do Pici-Bloco 940, Fortaleza, Ceará, Brazil
Universidad de Málaga, Departamento de Química Inorgánica, Facultad de Ciencias29071, Spain
Instituto de Física, UNAM, Ciudad Universitaria, Circuito de la Investigación s/n, Coyoacán, D.F. 04510, Mexico
Centro de Ciência e Tecnologia de Materiais - CCTM, Instituto de Pesquisas Energéticas e Nucleares - IPEN, São Paulo, São Paulo 05508-000, Brazil
Instituto de Ciência e Tecnologia - ICT, Universidade Federal de São Paulo UNIFESP, São José dos Campos, São Paulo 12231-280, Brazil
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