Methanation of carbon on Ni(100) surfaces at 120 K with gaseous H atoms
Upon directing a beam of thermal (2000 K) H atoms at carbon covered Ni(100) surfaces between 120 and 250 K methane was observed as the only reaction product. The initiating step H(gas) + C (ad) -> CH (ad) was identified as rate determining. Above 250 K thermal decomposition of CH(3)(ad) prevents C methanation. Only direct Eley-Rideal type reactions are involved in the stepwise hydrogenation of C to methane.
Bibliographic Reference: Article: Chemical Physics Letters, Vol. 267 (1997) pp. 391-396
Record Number: 199710963 / Last updated on: 1997-08-14
Original language: en
Available languages: en