Formation and characterization of catalytic carbons obtained from CO disproportionation over an iron nickel catalyst—I: Fragmentation and rates of carbon deposition

✍ Scribed by J. Guinot; M. Audier; M. Coulon; L. Bonnetain

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 431 KB
• Volume: 19
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(81)90113-5

✦ Synopsis

A series of catalytic carbons has been prepared by CO disproportionation (2CO + CO> + C) over an iron nickel catalyst. The catalyst is under the form of filings (particle sizes ranging from IO to 160 ym) of an iron nickel alloy (75 wt % nickel, 25 wt % iron). The dependence of the rate of carbon deposition on temperature, between 400 and 650°C. and on the CO martial nressure in the reacting CO/CO, mixtures has been investieated. Since the soecific

area of the catalyst is initially very small, its fragmentation by carbon deposition is necessary to obtain an appreciable rate of reaction. Experimental evidence suggest that the existence of a high density of dislocations in the catalyst is a necessary condition for its fragmentation.