Modeling and Analyses of an Integrated Air Revitalization System of a 4-Bed Molecular Sieve Carbon Dioxide Remova System (CDRA), Mechanical Compressor Engineering Development Unit (EDU) and Sabatier Engineering Development Unit

Enhanced CO2 Adsorption over Silica-Supported Tetraethylenepentamine Sorbents Doped with Alkanolamines or Alcohols

“…Hence the effective CO 2 adsorption inside the spacecraft plays a crucial role in ensuring perfect air quality for crew members. So far, a variety of molecular sieve systems have been adopted as the preferred sorbents for such CO 2 sequestration. − Despite the stable performance and the excellent safety, the intrinsic hydrophilicity of most molecular sieves generally renders the adsorption system used in this regard much complicated; for example, the inlet gas dehumidification must precede the CO 2 adsorption process. Since the first CO 2 adsorption systems containing solid amines were proposed, , many researchers have paid intense attention to the development of amine-based sorbents because such kind of materials can get rid of CO 2 from humid air and be regenerated by the pressure-swing desorption. − …”