Abstract
Supercritical carbon dioxide (scCO2) has many favorable attributes in materials design and chemical processing of materials. In this chapter, the application of scCO2 is put into perspective of the UN sustainable development goals in which application of scCO2 can be seen as a method to reduce material intensity. An overview of the pressure–volume–temperature properties of scCO2 is given with emphasis on its potential for heat and mass transfer. Solubility characteristics of scCO2 are highlighted, and physical property data for selected applications are reviewed. Selected applications are shown demonstrating metal deposition for catalyst preparation, nanocellular foaming of polymers, processing of metal–organic frameworks, and drying of Ag nanoparticle containing cellulose nanofibril aerogel composites. Material intensity of protocols in materials science can be lowered, and sustainability in design can be approached through the creative use of scCO2 as a solvent or processing aid.
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