Oxidation of CH4 and CO2 reforming of CH4 over Rh/ZrO2 catalysts with different metal dispersions

Authors
Ito, S Nagashima, K Araki, R Yarimizu, T Kameoka, S Kunimori, K
Citation
S. Ito et al., Oxidation of CH4 and CO2 reforming of CH4 over Rh/ZrO2 catalysts with different metal dispersions, NIP KAG KAI, (8), 2000, pp. 561-566
Citations number
43
Categorie Soggetti
Chemistry
Journal title
NIPPON KAGAKU KAISHI
ISSN journal
03694577 → ACNP
Issue
8
Year of publication
2000
Pages
561 - 566
Database
ISI
SICI code
0369-4577(200008):8<561:OOCACR>2.0.ZU;2-M
Abstract
Oxidation of CH4 under lean condition ((8) over bar 00 ppm) and CO2 reformi ng of CH4 were carried out using Rh/ZrO2 catalysts with different metal dis persions. It was found that both reactions showed a similar structure-sensi tive behavior: The TOF decreased with increasing of Rh dispersion. It is su ggested that the rate determining step is dissociative adsorption of CH4 or both reactions, and strong Rh-O bonds in smaller Rh crystallites may lead to a suppression of the dissociative adsorption of CH4 on the Rh surface.