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Information × Registration Number 0223U001534, 0122U001910 , R & D reports Title Nanoporous metal catalysts based on transition metals popup.stage_title Head Roik Oleksandr S., Доктор хімічних наук Registration Date 30-01-2023 Organization Taras Shevchenko National University of Kyiv popup.description2 The object of the study: the process of forming the structure and phase composition during quenching of the Cu-Zn melt, the temperature evolution of the morphology of the obtained hardened strip during high-temperature zinc distillation, the influence of zinc distillation parameters on the resulting porous structure of metallic materials. The purpose of the work: development of a methodology for obtaining a porous metal material based on copper using vapor phase removal of zinc from hardened Cu-Zn alloy precursors. Research methods: scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray fluorescence analysis, X-ray phase analysis, determination of the specific surface using low-temperature N2 adsorption/desorption. Thermodynamic modeling of the properties of phases and phase transformations in melts of the Cu-Zn system was carried out within the framework of the CALPHAD method. Equipment for vapor phase distillation of volatile components in vacuum (VPD method) from binary precursor alloys was developed and installed at the Department of Physical Chemistry. This equipment was used to obtain metallic materials based on copper with an open porous structure by the method of vapor phase distillation of zinc from Cu-Zn precursor alloys hardened from the liquid state. The chemical and phase composition, as well as the microstructure of the precursor alloys and the resulting porous materials, were studied. The influence of distillation parameters on the morphology of porous metallic materials was studied: specific surface area, pore size. It was established that porous copper has a macro/mesoporous structure.  Product Description popup.authors Golovata Nataliya V. Kazimirov Volodymyr P. Kotova Nataliya V. Paryiska Olena O Sokolsky Volodymyr Е. Yakovenko Oleksiy M. popup.nrat_date 2023-01-30 Close