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Adsorption and Desorption of Carbon Dioxide and Water Mixtures on Synthetic Hydrophobic Carbonaceous AdsorbentsSeveral synthetic carbonaceous adsorbents produced through pyrolysis of polymeric materials are available commercially. Some appear to have advantages over activated carbon for certain adsorption applications. In particular, they can have tailored hydrophobicities that are significantly greater than that of activated carbon, while moderately high surfaces areas are retained. These sorbents are being investigated for possible use in removing trace contaminants and excess carbon dioxide from air in closed habitats, plant growth chambers, and other applications involving purification of humid gas streams. We have analyzed the characteristics of a few of these adsorbents through adsorption and desorption experiments and standard characterization techniques. This paper presents pure and multicomponent adsorption data collected for carbon dioxide and water on two synthetic carbonaceous adsorbents having different hydrophobicities and capillary condensation characteristics. The observations are interpreted through consideration of the pore structure and surface chemistry of the solids and interactions between adsorbed carbon dioxide, water, and the solvent gas.
Document ID
20010121534
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Finn, John E.
(NASA Ames Research Center Moffett Field, CA United States)
Harper, Lynn D.
Date Acquired
August 20, 2013
Publication Date
January 1, 1994
Subject Category
Man/System Technology And Life Support
Meeting Information
Meeting: AICHE Annual Meeting
Location: San Francisco, CA
Country: United States
Start Date: November 13, 1994
End Date: November 18, 1994
Sponsors: American Inst. of Chemical Engineers
Funding Number(s)
PROJECT: RTOP 199-61-62
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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