Abstracts Book - IMRC 2018

• SF3-P015
NAPHTHALENE HIDROGENATION ON Pt NANOPARTICLES/TiO2
NANOTUBES CATALYST PREPARED BY VAPOR-PHASE
IMPREGNATION METHOD
Cecilia Encarnación Gómez 1 , Jorge Roberto Vargas García 2 , Jose Antonio Toledo Antonio 3 ,
Carlos Angeles Chavez 3 , Maria Antonia Cortes Jacome 3
1 Universidad Juárez Autónoma de Tabasco, División Académica Multidisciplinaria de Jalpa de
Méndez, Mexico. 2 Instituto Politécnico Nacional - IPN - ESIQIE, Ingeniería Metalurgica y
Materiales, Mexico. 3 Instituto Mexicano del Petróleo, Ingenieria Molecular, Mexico.
TiO 2 nanotubes prepared by hidrotermal method present a large external
surface and internal volume that it posible to disperse a large amount of
transition or noble metals. Pt nanoparticles were efficiently incorporated on
titania nanotubes by vapor-phase impregnation method from Pt
acetylacetonate precursor using a CVD reactor. The nanoparticles obtained in
this study have a excellent dispersion in a Pt content up to 20 %wt and a mean
particle size of 2 nm. The materials obtained can have multiple applications in
catalysis, photocatalysis, photovoltaics cells, hydrogen storage and separation,
etc. Accordingly, Pt/TiO 2 -NT material was used as a catalyst for the naphthalene
hidrogenation. The caracterization results obtained by XPS, HAADF-STEM and
FTIR-CO revealed that Pt nanoparticles are mainly as Pt° and occupying edge
sites available for the CO adsorption. The naphthalene hidrogenation reaction
was carried out to 220 °C and 7.1 MPa, and 1, 3, 6, 10, 14 y 20 %wt. Pt. In general,
the increase in the Pt content results in the increase in the catalytic activity.
Furthermore, the constant of the reaction rate of tetralin to decalin is greater
than naphthalene to tetralin and the complete transformation is carried out in
less than ten minutes.
Acknowledgment:
The financial support from Instituto Mexicano del Petróleo and Universidad
Juárez Autónoma de Tabasco is greatly appreciated
Keywords: Naphthalene hydrogenation, Pt nanoparticles, TiO2 nanotubes
Presenting authors email: ceci_egomez@yahoo.com.mx