Evaluation of the role of the metal-support interfacial centers in the dry reforming of methane on alumina-supported rhodium catalysts

Journal Article · Fri Mar 10 04:00:00 EST 2000 · Journal of Catalysis

DOI:https://doi.org/10.1006/jcat.1999.2752· OSTI ID:20020866

Ferreira-Aparicio, P; Fernandez-Garcia, M; Guerrero-Ruiz, A; Rodriguez-Ramos, I

The reforming of CH{sub 4} with CO{sub 2} (dry reforming) has been studied on a series of Al{sub 2}O{sub 3}-supported Rh-Cu catalysts. The reaction has been found to proceed on these systems through a bifunctional mechanism, in which the activation on methane takes place on the rhodium phase while carbon dioxide is activated on the support surface via formate intermediates. The addition of a metal, such as copper, inactive for methane activation, has allowed the authors to evaluate the role of the interfacial Rh-Al{sub 2}O{sub 3} sites in the reaction. The presence of copper reduces the stability of the catalysts, though it does not have any effect on the initial activity per surface exposed site. It indicates that the dry reforming of methane is not a structure-sensitive reaction and that catalytic activity, largely affected by the alumina support, is dependent on the number of surface exposed rhodium centers.

• Research Organization: C.S.I.C., Madrid (ES)
• OSTI ID: 20020866
• Journal Information: Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 2 Vol. 190; ISSN 0021-9517; ISSN JCTLA5
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
10 SYNTHETIC FUELS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CONFIGURATION INTERACTION
COPPER
METHANE
REFORMER PROCESSES
RHODIUM
SYNTHESIS GAS