PREPARATION OF NANOPARTICLES OF METAL OXIDES IN THE FLAME
Keywords:
synthesis,, nanoparticle,, flame,, metal oxide,, x-ray fluorescence analysisAbstract
Preparation of the final carbon material in the process of combustion of hydrocarbons is one of the most common methods used in large-scale production. However, despite numerous studies, still remain the topical problems associated with the process monitoring of combustion products formation in flame that limits the range of target production of carbon materials with desired properties by burning of hydrocarbons. Currently, investigations related to the nucleation and growth of solid carbon product in flame indicates that their formation occurs not immediately, but after reaction sequence between short-lived intermediate particles (radicals, ions, molecules, etc.). The composition, structure and properties of forming final combustion products in flame depends on the density, concentration and the nature of resulting intermediate particles. These parameters are specific for each fuel type depending on its chemical composition. In this paper, the density, concentration and composition of intermediate particles in particular local zone of flame has been controlled by alternative management of fuel combustion. Alternation combustion – is the way for organization of combustion process, where the initial stage of combustion for various fuel types is occurred individually, with further integration of flame at a certain height from matrix of burner. This condition allows to regulate the formation of stabilizing combustion products by selecting of fuels and alteration in combined reaction zone of alternation flame of concentration density and composition of the intermediate particles. Based on the above, the article represents the purpose of formation of metal oxide nanoparticles during organization of joint organization of propane combustion and alcohol solution of metal salts. With the help of electronmicroscopic studies the structure and dimension of obtained nanosized particles of iron oxide, nickel and cobalt was investigated. The chemical composition of obtained was investigated by energy dispersive X-ray analysis (EDAX).References
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