HEATS OF ADSORPTION OF ARGON ON A SERIES OF CARBON BLACKS GRAPHITIZED AT SUCCESSIVELY HIGHER TEMPERATURES
Abstract
Calorimetric heats of adsorption were measured for A at -195 deg C on C black (Spheron 6) graphitized at 1000, 15000, 2000, and 2700 deg C. Experimental data are shown on isotherms and heat-coverage curves. The volumes adsorbed at given pressure (up to P/P sub o = 0.4) decreased in the order of increasing graphitization but above P/P sub o = 0.5 the volume increased. Heat- coverage curves indicated that: (1) in the region V/Vm = 0 to 0.4 the differential heats decrease with the graphitization up to 2000 deg C but remain constant between 2000 and 2700 deg C, (2) in the region V/Vm = 0.4 to 1.0 the arrest changes to a maximum which becomes higher with graphitization, and (3) the slope of the curve near Vm increases with increased graphitization; beyond Vm a second degree of graphitzation appeared to occur between 1000 and 2000 deg C.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1953
- Accession Number
- AD0016020
Entities
People
- D. M. Young
- H. Bienes
- R. A. Beebe
Organizations
- Amherst College