Accession Number : ADA259850


Title :   1,1,2-Trichloro, 1,2,2-Trifluoroethane (CFC-113) and Water Isotherm Measurements on Impregnated and Unimpregnated Activated Carbons


Descriptive Note : Final rept. Jan-Sep 1991


Corporate Author : CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD


Personal Author(s) : Carlile, Donna L ; Friday, David K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259850.pdf


Report Date : Jul 1992


Pagination or Media Count : 46


Abstract : Impregnated and unimpregnated activated carbon samples were characterized by measuring adsorption equilibria for water and 1,1,2 trichloro, 1,2,2 trifluoroethane (CFC-113). Water adsorption and desorption isotherms were measured at relative humidities (RH) between 20 and 98% at 303 K. The performance of each of these carbons against low boiling toxic vapors at various RH may be estimated using these data. The CFC-113 isotherms were measured at 298 and 348 K over a wide range of vapor phase concentrations from about 10 mg/cu m to about 5.0 x 10(exp 4) mg/cu m. The adsorption capacity of several selected carbon samples were compared over the entire concentration range at the two measured temperatures. These data showed that the relative adsorption capacity of two different carbon samples could change depending on the vapor phase concentration. This can be extremely significant if one tries to relate adsorbent performance to surface area measurement (N2 BET) results.... Adsorption equilibria, Impregnated carbon, Desorption, Unimpregnated carbon.


Descriptors :   *ACTIVATED CARBON , *HYDROCARBONS , *HALIDES , *ETHANES , MEASUREMENT , TEMPERATURE , SURFACE ANALYSIS , VAPORS , WATER , DESORPTION , IMPREGNATION , BOILING , ADSORBENTS , HUMIDITY , ISOTHERMS , ADSORPTION , TOXICITY , CARBON , VAPOR PHASES , PHASE , ALKANES , SURFACES


Subject Categories : Organic Chemistry
      Physical Chemistry
      Miscellaneous Materials
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE