Optimization of O2/CH4 to oxide methane at 823 K by alumina-ceria supported Pt catalysts

@article{ElizaldeMartnez2019OptimizationOO,
  title={Optimization of O2/CH4 to oxide methane at 823 K by alumina-ceria supported Pt catalysts},
  author={I. Elizalde-Mart{\'i}nez and Rom{\'a}n Ram{\'i}rez-L{\'o}pez and Fabi{\'a}n S. Mederos-Nieto and M. C. Monterrubio-Badillo and Rub{\'e}n V{\'a}zquez Medina and Mar{\'i}a E. Manr{\'i}quez-Ram{\'i}rez},
  journal={Reaction Kinetics, Mechanisms and Catalysis},
  year={2019}
}
Methane oxidation was carried out in presence of synthetized Pt/Al2O3–CeO2 catalysts with ceria contents between 1 and 37 mol%, at 823 K, 52,000 h−1 of GHSV, by varying the oxygen concentration from a deficient concentration respect to methane (1 mol:1 mol) up until a 100% excess over the stoichiometric (4 mol:1 mol). The catalysts were characterized by TGA, N2 sorption, XRD, TPR, UV–Vis, TPD-NH3, and ICP for elemental composition, while methane conversion was followed by gas chromatography. It… Expand

References

SHOWING 1-10 OF 34 REFERENCES
COMPLETE OXIDATION OF METHANE OVER PT/CEO2-Al2O3 CATALYSTS
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),Expand
Low-temperature oxidation of carbon monoxide and methane over alumina and ceria supported platinum catalysts
The ignition and extinction processes for total oxidation of CO, CH4 and CO + CH4 mixture in oxygen excess over Pt/Al2O3 and Pt/CeO2 catalysts with the platinum phase distributed either homogeneouslyExpand
Methane oxidation over alumina-supported noble metal catalysts with and without cerium additives
Abstract Laboratory reactor experiments have been conducted to evaluate alumina-supported noble metal catalysts, both in the presence and absence of cerium additives, for their effectiveness in theExpand
Production of hydrogen via steam reforming of biofuels on Ni/CeO2–Al2O3 catalysts promoted by noble metals
Abstract The catalytic activity of Ni/CeO 2 –Al 2 O 3 catalysts modified with noble metals (Pt, Ir, Pd and Ru) was investigated for the steam reform of ethanol and glycerol. The catalysts wereExpand
Improved stability of Ni/Al2O3 catalysts by effect of promoters (La2O3, CeO2) for ethanol steam-reforming reaction
Abstract Ni-based catalysts supported on γ-Al2O3 modified by La2O3 and CeO2 promoters were prepared in the present work. The objective was to study the promotional effect of addition of 15 wt% La2O3Expand
High Active and Selective Ni/Ceo2-Al2O3 and Pd-Ni/Ceo2-Al2O3 Catalysts for Oxy-Steam Reforming of Methanol
Herein, we report about the monometallic Ni and bimetallic Pd-Ni catalysts supported on CeO2-Al2O3 binary oxide, which were investigated in oxy-steam reforming of methanol (OSRM). Monometallic andExpand
Effect of CeO2 loading on the surface and catalytic behaviors of CeO2-Al2O3-supported Pt catalysts
Abstract Pt catalysts supported on mixed CeO2-Al2O3 carriers with different CeO2 loading (0.5–10.3 wt.%) were prepared by wetness impregnation method. The catalysts were characterized by SBET, X-rayExpand
A novel catalyst of CeO2/Al2O3 for selective catalytic reduction of NO by NH3
CeO2/Al2O3 catalysts supported on an activated-ceramics have been prepared and characterized by N2-BET, XRD, TEM and NH3-TPD methods. The effects of reaction temperature and the interactions betweenExpand
Unsteady-state operation of supported platinum catalysts for high conversion of methane
Total oxidation of methane over model monolith catalysts with platinum sup- ported on alumina, alumina-ceria and ceria has been studied under unsteady- state operation of the feed gas stoichiometry.Expand
The tremendous effect of trace amounts of Rh on redox and catalytic properties of CeO2–TiO2 and Al2O3 in CH4 partial oxidation
Abstract Trace amounts of Rh (0.005 wt.%) were found to strongly improve both overall and surface reducibility of Al 2 O 3 and CeO 2 –TiO 2 prepared via hardcast- and cellulose-templating methods.Expand
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