TY - JOUR
T1 - Complete oxidation of methane over Pt/CeO2-Al2O3 catalysts
AU - Ramírez-López, R.
AU - Balderas-Tapia, L.
AU - Elizalde-Martinez, I.
AU - Viveros, T.
N1 - Funding Information:
Román Ramírez-López would like to thank to CONACyT for the financial support for his doctoral study at Universidad Autónoma Metropolitana-Iztapalapa, Mexico.
PY - 2009/10
Y1 - 2009/10
N2 - Pt catalysts supported on mixed CeO2-Al2O3 carriers with different CeO2 loadings (2-50 wt.%) were prepared by the sol-gel method. Several techniques such as N2 physisorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), and inductively coupled plasma atomic emission spectroscopy (ICP-AES) were applied to characterize the physicochemical properties of the catalysts. The temperature-programmed reduction plots indicated that the reduction of the corresponding oxygen species becomes difficult in the samples with high cerium contents due to the fact that reduction of the oxygen from the lattice requires more energy, i.e., greater temperature. The catalysts were tested on the methane oxidation reaction. The results of the tests of Pt/CeO2-Al2O3 catalysts showed a suppression of the activity when the content of CeO2 was increased, although Pt catalyst with 50 wt.% of CeO2 exhibited the highest specific activity.
AB - Pt catalysts supported on mixed CeO2-Al2O3 carriers with different CeO2 loadings (2-50 wt.%) were prepared by the sol-gel method. Several techniques such as N2 physisorption, X-ray diffraction (XRD), temperature-programmed reduction (TPR), and inductively coupled plasma atomic emission spectroscopy (ICP-AES) were applied to characterize the physicochemical properties of the catalysts. The temperature-programmed reduction plots indicated that the reduction of the corresponding oxygen species becomes difficult in the samples with high cerium contents due to the fact that reduction of the oxygen from the lattice requires more energy, i.e., greater temperature. The catalysts were tested on the methane oxidation reaction. The results of the tests of Pt/CeO2-Al2O3 catalysts showed a suppression of the activity when the content of CeO2 was increased, although Pt catalyst with 50 wt.% of CeO2 exhibited the highest specific activity.
KW - Ceria
KW - Complete oxidation
KW - Methane
KW - Sol-gel
UR - http://www.scopus.com/inward/record.url?scp=70449433947&partnerID=8YFLogxK
U2 - 10.1080/00986440902831813
DO - 10.1080/00986440902831813
M3 - Artículo
SN - 0098-6445
VL - 196
SP - 1189
EP - 1197
JO - Chemical Engineering Communications
JF - Chemical Engineering Communications
IS - 10
ER -