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Advisor(s)
Abstract(s)
In an era where sustainability is becoming the main driving force for research and development, supercritical fluids-based techniques are presented as a very efficient alternative technology to conventional extraction, purification, and recrystallization processes. Supercritical antisolvent (SAS) precipitation is a novel technique that can replace liquid antisolvent precipitation techniques. Additionally, through the optimization of precipitation operating conditions, morphology, particle size, and particle size distribution of nanoparticles can be controlled. As an antisolvent, supercritical carbon dioxide (scCO2) is far more sustainable than its conventional liquid counterparts; not only does it have a critical point (304 K and 73.8 bar) on its phase diagram that allows for the precipitation
processes to be developed so close to room temperature, but also its recovery and, consequently, the precipitated solute purification stage is considerably simpler. This technique can be used efficiently for preparing nanocatalysts to be used in biodiesel production processes.
Description
Keywords
Supercritical antisolvent precipitation Carbon dioxide Supercritical CO2 Nanoparticles Biodiesel catalysts
Citation
SANTOS, Samuel.; PUNA, Jaime; GOMES, João F. P. - A brief review on the supercritical ntisolvent (SAS) technique for preparation of nanocatalysts to be used in biodiesel production. Energies. ISSN 1996-1073. Vol. 15, N.º 24 (2022), pp. 1-7.
Publisher
MPDI