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  • Author(s):
    K. Manukyan, J. Pauls, C. Shuck, S. Rouvimov, A. Mukasyan, K. Nazaretyan, H. Chatilyan, S. Kharatyan
    Abstract:

    A high-speed electrothermography approach is applied to investigate the mechanism and kinetics for nanostructured Al/Ni foils. Application of the Kolmogorov-Johnson-Mehl-Avrami and adiabatic thermal explosion models reveal that the activation energy for nucleation appears to be much higher than that for reaction. It is shown that formation of intermetallic nuclei is the limiting step that defines the ignition characteristics of the foils at temperatures below 500 K, while the process is react…

    Date Published:
    2018
    Record Visibility:
    Public
  • Author(s):
    V. Danghyan, S. Calderon Novoa, A. Mukasyan, E.E. Wolf
    Abstract:

    A novel method of catalyst preparation, using pressure dilution, which increased the dispersion and stability of a Ni/fumed SiO2 catalyst is described. We first studied the effect of carbon formation on the activity and stability of Ni/fumed SiO2 catalysts at different times on stream (TOS) during the dry reforming of methane (DRM). The catalysts were characterized by SEM/TEM and BET, XRD, XPS, TGA/DSC, and CO chemisorption. Catalysts prepared by impregnation of Ni(NO3)2·6H2O onto fumed SiO2,…

    Date Published:
    2018
    Record Visibility:
    Public