Structure and reactivity of plasma treated Ni/Al2O3 catalyst for CO2 reforming of methane

• Published in: Applied catalysis. B, Environmental Vol. 81; no. 1-2; pp. 132 - 140
• Main Authors: Zhu, Xinli, Huo, Peipei, Zhang, Yue-ping, Cheng, Dang-guo, Liu, Chang-jun
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 30.05.2008; Elsevier
• Subjects: Catalysis; Chemistry; Dry reforming; Exact sciences and technology; General and physical chemistry; Methane; Nickel; Synthesis gas; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Methane; Dry reforming; Nickel; Synthesis gas; Plasma; Transition metal; Reforming; Heterogeneous catalysis; Chemical reactivity; Structure; Alumina; Catalyst; Environmental protection
• ISSN: 0926-3373; 1873-3883
• DOI: 10.1016/j.apcatb.2007.11.042

The glow discharge plasma treated Ni/Al2O3 catalyst showed an excellent anti-coke property for CO2 reforming of methane. Characterizations using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature programmed reduction (TPR), transmission electron microscopy (TEM), and CO adsorbed infrared spectroscopy (IR) were conducted to investigate the structure and reactivity of the plasma treated Ni/Al2O3 catalyst for CO2 reforming of methane. It confirms that the plasma treatment of Ni precursor at room temperature followed by calcination thermally has a significant influence on the surface characteristics of the active phase. The plasma treated catalyst contains high concentration of close packed plane with improved Ni dispersion and enhanced Ni-alumina interaction, which lead to high catalytic activity and excellent resistance to formations of filamentous carbon and encapsulating carbon.