Abstracts Book - IMRC 2018

• SF3-P063
CARBON DIOXIDE METHANATION OVER Ni CATALYSTS
SUPPORTED ON TiO2 NANOTUBES
Oscar Carrera Nuñez 1 , Miriam Vega Hernandez 1 , Jose Carlos Mendoza Hernandez 1 , Jessica
Batalla Mayoral 2 , Albina Gutierrez Martinez 3 , Claudia Gutierrez Wing 3 , Raul Perez Hernandez 3
1 Benemerita Universidad Autonoma de Puebla, Facultad de Ingeniería Química, Mexico.
2 Benemerita Universidad Autonoma de Puebla, Complejo Regional Mixteca. Campus Izucar de
Matamoros, Mexico. 3 Instituto Nacional de Investigaciones Nucleares (ININ), Tecnologia de
Materiales, Mexico.
In the present work, synthesis of titania nanotubes (TiO 2 -NT) was carried out
using the hydrothermal method commercial TiO 2 . The nanomaterials were
thermally stabilized at 500 °C for 2 hours and impregnated with 5, 10 and 20
wt% of Ni. An aliquot of the 20Ni/TiO 2 -NT catalyst was impregnated with 1% Pd,
and another Pd(1%)/TiO 2 -NT catalyst was prepared by impregnation
method. The catalysts were calcined at 400 °C/1h and activated in H 2 flow at 450
°C/1h. The nanocatalysts were charaterized by nitrogen adsorption-desorption
(BET), scanning electron microscopy (SEM), Transmission electron
microscopy (TEM), X-ray diffraction (XRD), programmed temperature reduction
(TPR). The catalytic properties (activity and selectivity) of the catalysts were
studied in the CO 2 + 4H 2 ↔ CH 4 + 2H 2 O reaction. The catalytic activity
results showed that the Pd20Ni/TiO 2 -NT and 20Ni/TiO 2 -NT samples had similar
behavior than that of the rest of the catalysts after 250 °C, with a maximum
conversion of 50% at 325 °C. However, the 10Ni/TiO 2 -NT catalyst at 375 °C
showed a CO 2 conversion ca. 60% and decreased to 55% at the maximum
reaction temperature. Although, 20Ni/TiO 2 -NT and Pd20Ni/TiO 2 -NT samples
show a high selectivity towards methane than the other catalysts. This behavior
can be associated to a better dispersion of Ni on TiO 2 -NT as shown by SEM and
TEM results
Acknowledgment:
The support the National Institute for Nuclear Research (under contracts CA-
607,CO-081 and CONACYT-SENER 226151) is appreciated.
Keywords: Methanation, Ni/TiO, CO2
Presenting authors email: neptuno.10@hotmail.com