Ignition and Combustion Characteristics of Nanoaluminum with Copper Oxide Nanoparticles of Differing Oxidation State
| Autor: | Michael R. Zachariah, T. Yong-Jin Han, Kyle T. Sullivan, Tammy Y. Olson, Garth C. Egan, Marcus A. Worsley |
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| Rok vydání: | 2016 |
| Předmět: |
Argon
010304 chemical physics Inorganic chemistry Oxide chemistry.chemical_element Nanoparticle Thermite 02 engineering and technology 021001 nanoscience & nanotechnology Combustion 01 natural sciences Oxygen Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Ignition system chemistry.chemical_compound General Energy chemistry Chemical engineering law 0103 physical sciences Particle Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 120:29023-29029 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | The importance of the oxidation state of an oxidizer and its impact on gaseous oxygen and total gas production in nanocomposite thermite combustion was investigated by probing the reaction and ignition properties of aluminum nanoparticles (Al-NPs) with both cupric oxide (CuO) and cuprous oxide (Cu2O) nanoparticles. The gas release and ignition behavior of these materials were tested with >105 K/s temperature jump (T-jump) heating pulses in a high temporal resolution time-of-flight mass spectrometer (ToF-MS) as well as in an argon environment. Reactivity was tested using a constant volume combustion cell with simultaneous pressure and optical measurements. A variety of Cu2O particle sizes ranging from 200 to 1500 nm were synthesized and found to release oxygen at ∼1200 K, which is higher than the values found for a variety of CuO particle sizes (∼1000 K). Both oxides were found to ignite around 1000 K, which implies a consistent ignition mechanism for both through a condensed phase pathway. The higher oxid... |
| Databáze: | OpenAIRE |
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