Publication

Modeling of surface intermediates under forced periodic conditions applied to CO2 methanation

Albert Renken
1996
Journal Articles

Abstract

Forced oscillations of the carbon dioxide concn. in a hydrogen feed were applied to the carbon dioxide methanation reaction with simultaneous gas phase and surface anal. The response of the gas phase and surface species to these repeated dynamic conditions show a time shift following the sequence CO2 -> formate -> CO -> methane, but can be modeled by a simple model involving one single adsorbed surface intermediate and a reservoir in equil. with this intermediate. The dynamic behavior of this intermediate is very close to the variation of the IR absorption band assocd. with formate and carbonate species. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/dadd32a7-0362-4710-a056-e76ff6f59a7c

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Albert Renken
1996
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dadd32a7-0362-4710-a056-e76ff6f59a7c

About this result

Related concepts (32)

Oscillation

Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum and alternating current. Oscillations can be used in physics to approximate complex interactions, such as those between atoms.

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In chemistry, thermodynamics, and other related fields, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic states of matter: solid, liquid, and gas, and in rare cases, plasma. A phase of a thermodynamic system and the states of matter have uniform physical properties. During a phase transition of a given medium, certain properties of the medium change as a result of the change of external conditions, such as temperature or pressure.

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Modeling of surface intermediates under forced periodic conditions applied to CO2 methanation

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