Synthesis of the nickel-containing catalyst on the aluminum oxide supporter produced by glycine-nitrate synthesis
| Autor: | E.A. Pavlova, Vladimir Frolov, V.L. Belyaev, N. V. Obraztsov, D I Subbotin |
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| Rok vydání: | 2020 |
| Předmět: |
inorganic chemicals
010302 applied physics Nickel oxide Oxide chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Catalysis law.invention chemistry.chemical_compound Nickel Nitrate chemistry law 0103 physical sciences Oxidizing agent Calcination Acidity function 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Today: Proceedings. 30:528-531 |
| ISSN: | 2214-7853 |
| Popis: | Nanosized aluminum oxide is actively used to produce highly effective catalysts. There are a large number of methods for its preparation. One of the simplest methods for producing oxide materials is high-temperature self-propagating synthesis. To increase the degree of precursors mixing in the synthesis, water-soluble compounds were used: aluminum nitrate (oxidizing agent) and glycine (fuel). The produced aluminum oxide was calcined and impregnated with nickel nitrate and re-calcined. The catalyst was studied by X-ray phase analysis, IR spectroscopy, BET method (specific surface analysis), scanning electronic microscopy and pH measurement (Hammett acidity functions). In this case, the specific surface of the sample synthesized by the glycine-nitrate synthesis method after impregnation with a 5% solution of nickel nitrate sharply increased (16.5–336.6 m2/g). It was established that, before impregnation with nickel oxide, acid centers predominate on the surface of aluminum oxide, and after impregnation, the main ones. Hammett's acidity function was 10.7. Despite the fact that the catalyst has an average catalytic activity in a standardized oxidation of hydrogen, it has the necessary number of acidic and basic centers, which expands the possibilities of its modification and deposition of catalytically active components. |
| Databáze: | OpenAIRE |
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