Morphology Dependence of Catalytic Properties of Ni/CeO2 Nanostructures for Carbon Dioxide Reforming of Methane
Citations Over TimeTop 1% of 2012 papers
Abstract
The comparative catalytic activity and coke resistance are examined in carbon dioxide reforming of methane over Ni/CeO2 nanorods (NR) and nanopolyhedra (NP). The Ni/CeO2–NR catalysts display more excellent catalytic activity and higher coke resistance compared with the Ni/CeO2–NP. The high resolution transmission electron microscope reveals that the predominantly exposed planes are the unusually reactive {110} and {100} planes on the CeO2–NR rather than the stable {111} one on the CeO2–NP. The prepared samples were also characterized by X-ray diffraction, transmission electron microscopy, hydrogen temperature-programmed reduction, X-ray photoelectron spectroscopy, UV and visible Raman spectra, and oxygen temperature-programmed oxidation. The {110} and {100} planes show great superiority for the anchoring of Ni nanoparticles, which results in the existence of strong metal–support interaction effect (SMSI). The SMSI effect can be helpful to prevent sintering of Ni particles, which benefits to reduce the deactivation of catalytic activity. Besides, the oxygen vacancies and the mobility of lattice oxygen also show the morphology dependence. They can participate into the catalytic reaction and be beneficial to the activation of carbon deposition. In conclusion, the excellent catalytic activity and coke resistance of the Ni/CeO2–NR should be attributed to the SMSI effect and abundant oxygen vacancies.
Related Papers
- → Catalytic Technology for Carbon Dioxide Reforming of Methane to Synthesis Gas(2009)592 cited
- → Dry Reforming of Shale Gas and Carbon Dioxide with Ni‐Ce‐Al2O3 Catalyst: Syngas Production Enhanced over Ni‐CeOx Formation(2018)47 cited
- → Study on hydrogen-rich syngas production by dry autothermal reforming from biomass derived gas(2012)18 cited
- → Dry Reforming Process Using Microwave Plasma Generator with High Carbon Dioxide Conversion Efficiency for Syngas Production(2023)4 cited
- → Lanthanide-Based Perovskite Enhance Syngas Production for a Low-Carbon Future through Chemical Looping Dry Reforming of Methane(2024)