Semicokes and cokes prepared respectively at 773 and 1173 K from brown-coals, xylitic and earthy, from Polish coal seams, were activated with gaseous oxygen (10% oxygen and 90% argon) in a thermogravimetric apparatus to different burn-offs. With increasing temperature of oxygen activation a constant
Multi-stage activation of brown-coal chars with oxygen
✍ Scribed by Kazimierz Tomków; Teresa Siemieniewska; Anna Jankowska; Franciszek Czechowski
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 517 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The adsorption of oxygen on degassed brown coal char has been investigated gravimetrically in the temperature range 25"-200°C and at pressures up to 1 atm. The adsorption occurs by two separate processes, one reversible and the other irreversible. Methods have been devised to investigate these proce
Two petrographic types of Tertiary brown coals, xylitic and earthy, were carbonized, and activated with carbon dioxide between 1123 and 1273 K. The development of porosity in the activated chars was studied by adsorption of benzene and carbon dioxide at 298 K and by mercury porosimetry. The type of
CARBON 215 ram was placed in the mold and the assembly compressed and heated according to standard techniques. The result was a Lucite cylinder with graphite flakes imbedded and oriented with their a-axes parallel, and in a plane perpendicular to the axis of the Lucite cylinder. The cylinder was sec