Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane

Objective: This study has analyzed the performance of Ni and Ni-Rh catalysts based on MgO/g-Al2O3 in the process of dry reforming of methane (DRM). Methods/Statistical Analysis: The samples were prepared using the incipient wetness impregnation method and were characterized by N2 adsorption, X-ray d...

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Autores principales: Ocsachoque, Marco Antonio, Leguizamón Aparicio, María Silvia del Valle, González, María Gloria
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Química
dry reforming of methane
oxides
Rh-Ni catalysts
surface properties
raman spectroscopy and scattering
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78399
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78399
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
dry reforming of methane
oxides
Rh-Ni catalysts
surface properties
raman spectroscopy and scattering
spellingShingle Química
dry reforming of methane
oxides
Rh-Ni catalysts
surface properties
raman spectroscopy and scattering
Ocsachoque, Marco Antonio
Leguizamón Aparicio, María Silvia del Valle
González, María Gloria
Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
topic_facet Química
dry reforming of methane
oxides
Rh-Ni catalysts
surface properties
raman spectroscopy and scattering
description Objective: This study has analyzed the performance of Ni and Ni-Rh catalysts based on MgO/g-Al2O3 in the process of dry reforming of methane (DRM). Methods/Statistical Analysis: The samples were prepared using the incipient wetness impregnation method and were characterized by N2 adsorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), diffuse reflectance spectroscopy (DRS), surface acidity, X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), and Raman spectroscopy. The catalysts were reduced with hydrogen and measured in the reaction of CH4 with CO2 at two CH4/CO2 ratios. Findings: The 0.5% Rh addition to Ni/MgO-g-Al2O3 improves the activity and the stability for this process. In the bimetallic catalysts, the reduction temperature of the active phase decreases due to the hydrogen spillover mechanism from the noble metal to the catalyst surface, which favors their catalytic activity. On the other hand, the interaction between Rh and the support would be the cause for the better performance of bimetallic catalysts. The Rh-Ni/MgO-g-Al2O3 catalyst is the most active, indicating that the impregnation order affects the catalytic behavior. Improvements/Applications: This study gives promising results for this type of catalyst, also showing the effect of the catalyst preparation on the activity and its relationship with deactivation by coke.
format Articulo
Articulo
author Ocsachoque, Marco Antonio
Leguizamón Aparicio, María Silvia del Valle
González, María Gloria
author_facet Ocsachoque, Marco Antonio
Leguizamón Aparicio, María Silvia del Valle
González, María Gloria
author_sort Ocsachoque, Marco Antonio
title Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
title_short Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
title_full Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
title_fullStr Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
title_full_unstemmed Effect of Rh Addition to Ni/MgO-Al2O3 Catalysts for Dry Reforming of Methane
title_sort effect of rh addition to ni/mgo-al2o3 catalysts for dry reforming of methane
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/78399
work_keys_str_mv AT ocsachoquemarcoantonio effectofrhadditiontonimgoal2o3catalystsfordryreformingofmethane
AT leguizamonapariciomariasilviadelvalle effectofrhadditiontonimgoal2o3catalystsfordryreformingofmethane
AT gonzalezmariagloria effectofrhadditiontonimgoal2o3catalystsfordryreformingofmethane
bdutipo_str Repositorios
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