DESORPTION STUDY ON SOME AMINE-IMPREGNATED CARBONS

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Authors
  1. Liang, S.H.C.
  2. Pagotto, J.G.
  3. Harrison, B.H.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
In support of the development of the penetrant protective carbon (PPC), the stability of the amine impregnants on the carbon surface was investigated. Two amine-impregnated carbons were subjected to a flow of warm, humid air (to simulate actual use inside a gas-mask canister) in determining the extent of amine desorption under these conditions. The report described in detail the development of a test apparatus for this purpose, and the analytical methods employed to collect, detect and measure the desorbed amine. The results indicated that a significant amount of amine came off the carbon surface, and that some of the amine impregnant deteriorated. When another layer of carbon was placed underneath the PPC, the amount of amine released was drastically reduced over the same period of time. This information led to the current configuration of the adsorbent beds inside the new Canadian high performance plastic C7 canister. A second bed of carbon (the ASC/TEDA carbon) was placed on the downstream side of the penetrant protective carbon (PPC). The amount of amine released under the actual use of the C7 canister was decreased with a concomitant lowering of the amine desorption rate. The C7 canisters are packaged inside hermetically sealed package under vacuum, to stop any deterioration process on the amine impregnants.
Keywords
TEDA;ASC/TEDA;TEA;Triethylenediamine
Report Number
DRES-653 —
Date of publication
01 Nov 1997
Number of Pages
86
DSTKIM No
98-00614
CANDIS No
507510
Format(s):
Hardcopy;Document Image stored on Optical Disk

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