𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Hydrogenation of catalytic carbons obtained by CO disproportionation or CH4 decomposition on nickel

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

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
497 KB
Volume
17
Category
Article
ISSN
0008-6223

No coin nor oath required. For personal study only.

✦ Synopsis

The hydrogenation of catalytic carbons has been studied in the temperature range of their deposition (300-700°C) by CO disproportionation or by CH4 decomposition on nickel powders. When obtained under non carbiding conditions, the catalytic carbons are very reactive between 350 and 600°C where uncatafysed carbons are inert. The reactivity does not depend on the temperature of deposition and on preliminary heat treatment, but depends on the degree of gasification. This reactivity is imputed to the quality of the metal carbon interface which allows a good deposition-gasification reversibility. When deposition occurs under carbiding conditions, both deposition and subsequent hydrogenation are poisoned by the carbon formed by thermal decomposition of the carbide.

📜 SIMILAR VOLUMES

Formation and characterization of cataly
Formation and characterization of catalytic carbons obtained from co disproportionation over an iron nickel catalyst—II: Characterization
✍ M. Audier; J. Guinot; M. Coulon; L. Bonnetain 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 612 KB

The metal-carbon composites obtained by CO disproportionation (2CO \*CO2 + C) over an iron-nickel (containing 75 Wt%Ni) are characterized by T.E.M., X-ray diffraction and krypton adsorption at 77 K. Besides the now well known carbon filaments, two other types of morphology are described and the expe

Formation and characterization of cataly
Formation and characterization of catalytic carbons obtained from CO disproportionation over an iron nickel catalyst—I: Fragmentation and rates of carbon deposition
✍ J. Guinot; M. Audier; M. Coulon; L. Bonnetain 📂 Article 📅 1981 🏛 Elsevier Science 🌐 English ⚖ 431 KB

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 dep

Effect of hydrogen on the synthesis of c
Effect of hydrogen on the synthesis of carbon nanofibers by CO disproportionation on ultrafine Fe3O4
✍ Wenxin Lu; Zhijun Sui; Jinghong Zhou; Ping Li; Xinggui Zhou; De Chen 📂 Article 📅 2009 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 456 KB 👁 1 views

## Abstract Carbon nanofibers (CNFs) are grown by catalytic CO disproportionation over ultrafine Fe~3~O~4~ catalyst at a hydrogen concentration of 0–29.17%, and the time‐depending rates of CNFs growth are continuously monitored and the morphologies of the as‐synthesized CNFs are analyzed. Increasin

Hydrogenation of CO2 and CO by Fe cataly
Hydrogenation of CO2 and CO by Fe catalysts obtained from Fe2(CO)9 and Fe3(CO)12 clusters supported on activated carbons
✍ Carlos Moreno-Castilla; Miguel A. Salas-Peregrín; Francisco J. López-Garzón 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 753 KB

Hydrogenation of carbon dioxide and carbon monoxide on iron catalysts prepared from Fe,(CO), and Fe,(CO),, supported on four activated carbons were studied. The catalysts, prepared and reduced in H, at 673 K for 12 h, were characterized by H, and CO chemisorption and TEM. The catalysts prepared from