The process of materials synthesis in supercritical fluid, developed at ICMCB, is based on a chemical reaction (transformation of metal precursors by thermolysis, ammonolysis, red-ox or sol-gel reactions). A wide range of materials can be produced (metals, oxides and nitrides); a well knowledge of the influence of operating parameters allows to tune the characteristics of final particles (size, morphology, composition and structure). However, the developments of materials processing in supercritical fluids are linked to the improvement of the existing numerical tools. Regarding fine particle synthesis, we have proposed a new model of particle growth in supercritical fluids; this model is based on a two steps mechanism: coalescence and then aggregation. The model calculates the evolution of particle size as a function of residence time in the synthesis reactor for metal copper.
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