Accession Number:

ADA209393

Title:

X-Ray Photoelectron Spectroscopy Surface Studies of Activated Carbon

Descriptive Note:

Technical rept. Sep-Dec 1988

Corporate Author:

CHEMICAL RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1989-04-01

Pagination or Media Count:

38.0

Abstract:

ASC Whetlerite is used for removal of reactive gases from streams of air. Of importance to the military is its ability to remove HCN, CN2, CNCL and AsH3 through reactionchemisorption with impregnants, namely copper, chromium and silver. ASC Whetlerite is prepared through impregnation of charcoal granules with ammonium carbonate solutions of chromium VI, copper II and silver salts. The speciation of the impregnants is not well defined. Pytlewski has reported the existence of various copper-chromium complexes on ASC Whetlerite. Treatment of ASC Whetlerite with triethylenediamine TEDA following impregnation is reported to improve protection against cyanogen chloride. The objective of this study was to determine the oxidation states of the impregnants and investigate whether a large fraction of the impregnants is located at the external surface of the carbon granules. Both ASC and ASC treated with TEDA ASC-TEDA will be analyzed in an effort to determine the role of TEDA in the improved reactivity of ASC.

Subject Categories:

  • Industrial Chemistry and Chemical Processing
  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE