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Article
In situ IR/MS study of partial oxidation of CH4 coupled with pulse technique over Rh/Al2O3
Catalysis Communications
  • Rahul Singh, The University Of Akron
  • Steven Chuang, The University of Akron
Document Type
Article
Publication Date
3-31-2008
Abstract

Partial oxidation of methane was studied by pulsing O2 into a CH4 flow over Rh/Al2O3 in a sequence of in situ infrared (IR) cell and fixed bed reactor at 773 K. The results obtained from the sequence of an IR cell followed by a fixed bed reactor show that (i) adsorbed CO produced possesses a long residence time, indicating that adsorbed oxygen leading to the formation of CO is significantly different from those leading to CO2 and (ii) CO2 is not an intermediate species for the formation of CO. The results obtained from the reversed reactor sequence show the water–gas shift reaction as the dominant pathway in the downstream of the catalyst bed. Pulsing oxygen into varying partial pressure of methane revealed that H2 oxidation is more sensitive to the partial pressure of the reactant than CO oxidation. In situ IR of pulse reaction coupled with alternating reactor sequence is an effective approach to study the primary and secondary reactions as well as the nature of their adsorbed species.

Citation Information
Rahul Singh and Steven Chuang. "In situ IR/MS study of partial oxidation of CH4 coupled with pulse technique over Rh/Al2O3" Catalysis Communications Vol. 9 Iss. 6 (2008) p. 1235 - 1242
Available at: http://works.bepress.com/steven_chuang/42/