Intensification methods of supercritical drying for aerogels production

Abstract

The features of the supercritical drying process are considered. The intensification methods of the supercritical drying for the production of aerogels were shown. The influence of the CO₂ supply, process temperature and CO₂ flowrate on the performance of supercritical drying was studied. The methods were proposed which permits to reduce the mass of used carbon dioxide in the one cycle of supercritical drying by 63.4%.

Keywords:

• Supercritical drying
• drying kinetics
• intensification methods
• carbon dioxide
• silica aerogel

Additional information

Funding

The research is supported by the Ministry of Science and Higher Education of the Russian Federation № 075-15-2020-792 (Unique identifier RF–190220X0031).