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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
  • Author(s):
    Eredzhep Menumerov, Robert Hughes, Spencer Golze, Robert Neal, Trevor Demille, Justin Campanaro, Kyle Kotecky, Sergei Rouvimov, Svetlana Neretina
    Abstract:

    The fundamental understanding of liquid-phase catalytic reactions is unavoidably complicated when the catalyst is prone to leaching since questions inevitably arise as to the true nature of the catalyst. While the catalytic reduction of 4-nitrophenol by borohydride is widely accepted as a trusted model reaction, it has faced little scrutiny concerning the potential impact of leached species or the appropriateness of assigning catalytic activity to the inserted nanostructures without rigorous …

    Date Published:
    2018