Catalytic reaction of methane with carbon dioxide over supported palladium

A. Erdöhelyi, J. Cserényi, E. Papp, F. Solymosi

Research output: Contribution to journalArticle

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Abstract

The reforming of methane with carbon dioxide has been investigated at 673-773 K on supported palladium catalysts in a fixed-bed continuous-flow reactor. In addition, the dissociation of carbon dioxide and methane, and the reactivity of the surface carbon formed have also been examined. The dissociation of carbon dioxide, detected by infrared spectroscopy, occurred at the lowest temperature, 373 K, on Pd/TiO2. It was greatly promoted by the presence of methane. The decomposition of methane at the temperature of the CH4 + CO2 reaction (ca. 773 K) proceeded initially at a high rate yielding hydrogen and small amounts of ethane and ethene. The deposition of surface carbon was also observed, which was hydrogenated only above 720 K. The reaction between carbon dioxide and methane occurred rapidly above 673 K to give carbon monoxide and hydrogen with a ratio of 1.3-1.7. Very little carbon was deposited during the reaction of a stoichiometric gas mixture. Kinetic parameters of the reaction were determined and a possible reaction mechanism is proposed. kw|carbon dioxide hydrogenation; kinetics; methane reforming; palladium.

Original languageEnglish
Pages (from-to)205-219
Number of pages15
JournalApplied Catalysis A: General
Volume108
Issue number2
DOIs
Publication statusPublished - Feb 3 1994

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Methane
Palladium
Carbon Dioxide
Carbon dioxide
Carbon
Reforming reactions
Hydrogen
Ethane
Carbon Monoxide
Kinetic parameters
Gas mixtures
Carbon monoxide
Hydrogenation
Infrared spectroscopy
Decomposition
Temperature
Catalysts
Kinetics

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Catalytic reaction of methane with carbon dioxide over supported palladium. / Erdöhelyi, A.; Cserényi, J.; Papp, E.; Solymosi, F.

In: Applied Catalysis A: General, Vol. 108, No. 2, 03.02.1994, p. 205-219.

Research output: Contribution to journalArticle

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abstract = "The reforming of methane with carbon dioxide has been investigated at 673-773 K on supported palladium catalysts in a fixed-bed continuous-flow reactor. In addition, the dissociation of carbon dioxide and methane, and the reactivity of the surface carbon formed have also been examined. The dissociation of carbon dioxide, detected by infrared spectroscopy, occurred at the lowest temperature, 373 K, on Pd/TiO2. It was greatly promoted by the presence of methane. The decomposition of methane at the temperature of the CH4 + CO2 reaction (ca. 773 K) proceeded initially at a high rate yielding hydrogen and small amounts of ethane and ethene. The deposition of surface carbon was also observed, which was hydrogenated only above 720 K. The reaction between carbon dioxide and methane occurred rapidly above 673 K to give carbon monoxide and hydrogen with a ratio of 1.3-1.7. Very little carbon was deposited during the reaction of a stoichiometric gas mixture. Kinetic parameters of the reaction were determined and a possible reaction mechanism is proposed. kw|carbon dioxide hydrogenation; kinetics; methane reforming; palladium.",
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N2 - The reforming of methane with carbon dioxide has been investigated at 673-773 K on supported palladium catalysts in a fixed-bed continuous-flow reactor. In addition, the dissociation of carbon dioxide and methane, and the reactivity of the surface carbon formed have also been examined. The dissociation of carbon dioxide, detected by infrared spectroscopy, occurred at the lowest temperature, 373 K, on Pd/TiO2. It was greatly promoted by the presence of methane. The decomposition of methane at the temperature of the CH4 + CO2 reaction (ca. 773 K) proceeded initially at a high rate yielding hydrogen and small amounts of ethane and ethene. The deposition of surface carbon was also observed, which was hydrogenated only above 720 K. The reaction between carbon dioxide and methane occurred rapidly above 673 K to give carbon monoxide and hydrogen with a ratio of 1.3-1.7. Very little carbon was deposited during the reaction of a stoichiometric gas mixture. Kinetic parameters of the reaction were determined and a possible reaction mechanism is proposed. kw|carbon dioxide hydrogenation; kinetics; methane reforming; palladium.

AB - The reforming of methane with carbon dioxide has been investigated at 673-773 K on supported palladium catalysts in a fixed-bed continuous-flow reactor. In addition, the dissociation of carbon dioxide and methane, and the reactivity of the surface carbon formed have also been examined. The dissociation of carbon dioxide, detected by infrared spectroscopy, occurred at the lowest temperature, 373 K, on Pd/TiO2. It was greatly promoted by the presence of methane. The decomposition of methane at the temperature of the CH4 + CO2 reaction (ca. 773 K) proceeded initially at a high rate yielding hydrogen and small amounts of ethane and ethene. The deposition of surface carbon was also observed, which was hydrogenated only above 720 K. The reaction between carbon dioxide and methane occurred rapidly above 673 K to give carbon monoxide and hydrogen with a ratio of 1.3-1.7. Very little carbon was deposited during the reaction of a stoichiometric gas mixture. Kinetic parameters of the reaction were determined and a possible reaction mechanism is proposed. kw|carbon dioxide hydrogenation; kinetics; methane reforming; palladium.

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