The process of activation of carbons by gasification with CO2-III. Uniformity of gasification

✍ Scribed by B. Rand; H. Marsh

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 474 KB
• Volume: 9
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(71)90145-x

✦ Synopsis

An 850°C polyfurfuryl alcohol carbon has been gasified at 800°C in pure carbon dioxide and mixtures thereof with carbon monoxide to 25 per cent burn-off. The effect of flow rate and particle size of the carbon upon the development of the microporosity has been studied. At low flow rates (particle size -3O+ 44 B.S. mesh) the carbon monoxide retained at the carbon surface inhibits gasification of the particle exterior resulting in the development of a greater micropore volume than when high flow rates are used. At this high flow rate (200 cm3 (S.T.P.) min-r) only with small particels (cl20 B.S. mesh) is complete uniformity of gasification approached. Addition of carbon monoxide to the pure carbon dioxide results in an enhancement of the degree of uniformitv of gasification and of micropore volume at this 25 per cent burnoffulevel.