Supercritical drying of aerogels

Volume
Part F1485
Start Page
93
End Page
120
Citation
in: Aegerter, M., Leventis, N., Koebel, M., Steiner, S. (eds) Handbook of Aerogels (2023)
Publisher DOI
10.1007/978-3-030-27322-4_4
Scopus ID
2-s2.0-85175188642
Publisher
Springer
In this chapter, we discuss the process of supercritical drying as it relates to the production of aerogels. What was once a heuristic technique typically performed using overly conservative process rules can now be quantitatively designed and efficiently implemented. Herein, thermodynamic and kinetic considerations of supercritical drying are reviewed along with practical aspects and process-engineering considerations at both the lab and industrial scale. Finally, considerations for process scale-up and further development of aerogel production processes are presented.
Schlagworte
Biopolymers
Commercial viability
Depressurization
Hydrogel
Lab scale equipment
Mass transport
Process modeling
Process scale up
Solvent exchange
Solvent spillage
Supercritical CO drying 2
Thermodynamic phase diagrams
DDC Class
620: Engineering