نتایج جستجو برای: supercritical hydrothermal synthesis
تعداد نتایج: 432597 فیلتر نتایج به سال:
In our current study, supercritical water impregnation (SCWI) was introduced as a unique catalyst preparation method by employing the high diffusivity property of supercritical water. The method allows nano-particles to place on support surfaces in extremely dispersed conditions. The silica-based nanocatalyst granules for this purpose were prepared by initial impregnation of highly porous silic...
Cobalt ferrite nano-powder have been obtained through a hydrothermal method with 2:1 molar ratio of Fe:Co without using any surfactant. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were used to consider the structural and morphological properties of CoFe2O4 nano-particles. Also, EDAX spectroscopy applied to evaluate the chemical composition. Results demonstrated that 15 hr hyd...
Lithium iron phosphate (LiFePO4) is a promising cathode material for lithium ion batteries because it can be synthesized from low cost starting materials, it is relatively non-toxic (compared with LiCoO2 or LiNiO2), and because it is intrinsically stable at potentials greater than 3.45 V [1]. The solidstate synthesis of LiFePO4 has therefore received much attention. However, this process is cos...
Supercritical Hydrothermal Synthesis of Organic Modified Nanoparticles Towards Superhybrid Materials
Nano-zirconia exhibits excellent mechanical properties (fracture toughness, hardness and flexural strength), thermal performance (thermal conductivity), optical biological for various ceramic-based applications. Supercritical hydrothermal synthesis technology is an advanced environmental-friendly method preparing nanoscale powders. In this paper, the formation crystallization of nano-zirconia d...
Results are reported from recent tests where hydrothermal flames spontaneously ignited in a Supercritical Water Oxidation (SCWO) Test Cell. Hydrothermal flames are generally categorized as flames that occur when appropriate concentrations of fuel and oxidizer are present in supercritical water (SCW); i.e., water at conditions above its critical point (218 atm and 374 °C). A co-flow injector was...
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