Articolo su libro (privo di ISBN) dal titolo "Syntheses and Methodologies in Inorganic Chemistry: New Compounds and Materials"
The manufacture of fine particles of a copper precursor, copper acetylacetonate (Cu(acac)2 ), has been investigated through the rapid expansion of supercritical solutions (RESS). The motivation was the production of particles with improved characteristics for use in the preparation of precursors for superconducting ceramics (BiSCCO). Solubility data of the Cu(acac)2 in supercritical CO2 were measured prior to performing the RESS experiment as these data are essential for accurate experimental design. The solubility data were measured using a dynamic saturation technique, at pressures between 100 and 200 bar and at three temperatures: 312.0K, 332.0K and 353.0K. Particles were manufactured by expanding a solution of supercritical CO2 saturated with the solute at 160 bar and 40°C through a micro-nozzle to pressures of 50 bar. The RESS technique produced particles that were significantely smaller than existing samples manufactured using jet-milling.
