Oxides, combustion synthesis

Julien, C., Camacho-Lopez, M. A., Mohan, T., Chitra, S., Kalyani, P., Gopukumar, S., Combustion synthesis and characterization of substituted lithium cobalt oxides in lithium batteries, Solid State Ionics 135, 241-248 (2000). 

Bansal NP and Zhong Z. Combustion synthesis of Sm0 5Sr0 5Co03 x and Lao 6Sr04CoO3 x nanopowders for solid oxide fuel cell cathodes. J. Power Sources 2006 158 148-153. 

Since oxide materials are extensively used in practical devices such as lamp phosphors or laser materials, their behavior at the nanoscale level has also been investigated. The size of yttrium oxide nanoparticles Y2C>3 Ln can be finely tuned by glycine-nitrate combustion synthesis. The overall equation of the exothermic reaction can be expressed as ... 

The combustion synthesis technique consists of bringing a saturated aqueous solution of the desired metal salts and a suitable organic fuel to the boil, until the mixture ignites a self-sustaining and rather fast combustion reaction, resulting in a dry, usually crystalline, fine oxide powder. By simple calcination, the metal nitrates can, of course, be decomposed into melt oxides upon heating to or above the phase transformation temperature. 

Combustion synthesis has been used to produce complex oxide materials, such as ferrites and ferroelectric, piezoelectric, and superconducting materials. In these systems, the heat required for SHS is supplied by the heat released from the reac-... 

Kharatyan, S. L., and Nersisyan, H. H., Combustion synthesis of silicon carbide under oxidative activation conditions. Int. J. SHS, 3,17 (1994). 

V. Edge-oxidized SWCNTs lose their edge functional groups very quickly, except for edge C-H bonds. The presence of hydrogen on the rim decreases the probability of self-capping, similar as in the prohibitive role of hydrogen in the fullerene formation process in combustion synthesis [19]. 

Examples Oxidative coupling of methane (OCM), oxidative dehydrogenation of C -C4 alkanes, partial oxidation of methane to synthesis gasa, combined oxidative coupling of methane and toluene to styrene Surface-stabilized combustion, partial oxidation of methane to synthesis gasa, synthesis of cyanic acid from methane, ammonia, and oxygen3... 

An interesting approach in making mullite powders has been via combustion synthesis [36], An aqueous heterogeneous redox mixture containing aluminum nitrate, silica fume (soot), and urea in the appropriate mole ratio is mixed together. When rapidly heated to 500°C, the mixture boils, foams, and can be ignited with a flame. The process yields weakly crystalline mullite powder in less than 5 min. Fully crystalline mullite can be obtained by incorporating an extra amount of oxidizer, such as ammonium perchlorate in the solution. 

In addition to the statistical nature of the interface instabilities active in diamond CVD, the orientation effect and anisotropic growth of crystals (i.e., evolutionary selection) play an important role in the observed instability phenomenon. Surface chemical reactions that occur preferentially between the growing diamond surface and oxidizing species in the combustion synthesis ambient also influence the development of the microstructure and morphology of crystals in diamond films. For example, in combustion CVD,... 

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