Vapor Phase Impregnation of Active Carbons
Quarterly progress rept. no. 2, Apr-Jun 1969
COMMONWEALTH SCIENTIFIC CORP ALEXANDRIAVA
Pagination or Media Count:
The research was concerned mainly with the deposition of copper and chrome to produce an impregnated carbon with activity similar to that of an ASC wetlerite. A treatment was devised which gives vapor impregnated copper coated carbons HCl activity equal to or better than whetlerites. Nitrogen adsorption isotherms were performed on samples of plain PCC grade CWS carbons, 8 by weight copper vapor impregnated carbons and ASC whetlerite carbons, and pore-size distribution computations made to determine coating penetration. Concentration of impregnants was determined from emmission spectrographic analysis and X-ray diffraction patterns were run in an attempt to identify the chemical structure of the impregnant. Photomicrographs were taken of the carbons surface using the scanning electron microscope as a means to further determine coating distribution. A method was developed for depositing chrome as the metal in the pores of the carbon from dicumene chromium. Samples were prepared by this method and treated to oxidize the chrome. Samples were prepared containing copper vapor deposited from CuAA and chrome deposited from dicumene, and sent to Edgewood for CK testing. A method similar to that developed for vapor impregnation with copper was used to deposit platinum from platinum acetyl acetonate PAA.
- Physical Chemistry
- Chemical, Biological and Radiological Warfare