Differential Scanning Calorimetry (DSC) for the Analysis of Activated Carbon
Abstract
The technique of Differential Scanning Calorimetry (DSC) has been applied to the characterization and the analysis of several activated carbons. These activated carbons included BPL carbon (a base carbon), ASC carbon (a BPL carbon impregnated with copper, chromium and silver) and ASC/T carbon (an ASC carbon impregnated with triethylenediamine, TEDA). DSC has been shown to be capable of measuring enthalpic changes associated with transitions and/or reactions of the surface species on the activated carbon. Physical changes or chemical reactions occurring on the carbon surface and the surface impregnants are observed as endotherms or exotherms (enthalpic changes) on the DSC curves (thermograms). The data from this study have demonstrated that DSC can be used quantitatively in the determination of the amount of TEDA impregnant on the activated carbon surface. This is based on the linear relationship between the area under the DSC curve and the amount of TEDA present. Qualitatively, DSC is shown to be able to differentiate between carbons which have been impregnated with different organic and/or metal impregnants, because each impregnated carbon produces a DSC thermogram which is unique to the compounds on its surface.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1991
- Accession Number
- ADA245899
Entities
People
- L. E. Cameron
- S. H. Liang
Organizations
- Defence Research and Development Canada