Characterization of carbon deposits on alumina supported cobalt and nickel by temperature programmed gasification with O2, CO2 and H2

✍ Scribed by J. van Doorn; R.C.S. Verheul; L. Singoredjo; J.A. Moulijn

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 606 KB
• Volume: 65
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(86)90109-2

✦ Synopsis

Temperature-programmed gasification with O,, CO, and H, is used for the characterization of carbon deposits on Ni/Al,O, and Co/Al,O,, based on the difference in reactivity of the several types of deposits. These deposits were formed by CO disproportionation at 675 K, 725 K and 775 K. The gasification patterns show the existence of mainly two types of carbon deposits. One form is attributed to filamentous carbon, the second form is believed to have a more graphitic structure. The TPG patterns are strongly influenced by the oxidation state and the catalytic activity of the metal(oxide) on the gasification of carbon.