Composition and structure of pyrophoric nickel catalysts according to X-ray diffraction data
| Autor: | D. A. Prozorov, T. Yu. Osadchaya, R. N. Rumyantsev, A. V. Afineevskii, M. V. Lukin, S. P. Kochetkov |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Materials science organic chemicals Catalyst support Inorganic chemistry Alloy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalyst poisoning Pyrophoricity Raney nickel 0104 chemical sciences Catalysis chemistry.chemical_compound Nickel chemistry Sodium hydroxide engineering heterocyclic compounds Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Russian Journal of Physical Chemistry A. 91:30-35 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024417010204 |
| Popis: | The properties of a nickel catalyst obtained by treatment of nickel–aluminum alloy with sodium hydroxide in the presence of H2O2 and additionally stabilized with increased pressure were studied. Additional stabilization decreased the catalyst activity by 25%, but gave a more distinct picture for an XRD analysis of the active catalyst surface and decreased the time of deactivation of the dehydrated catalyst with air oxygen. The catalyst stabilization was explained by the displacement of water, decrease in the pore size, and surface inhomogeneity. |
| Databáze: | OpenAIRE |
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