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Structural Insight into La_0.5Ca_0.5Mn_0.5Co_0.5O₃ Decomposition in the Methane Combustion Process.

ABSTRACT: Perovskite-like solid solution La_0.5Ca_0.5Mn_0.5Co_0.5O₃ was tested during the total methane combustion reaction. During the reaction, there is a noticeable decrease in methane conversion, the rate of catalyst deactivation increasing with an increase in temperature. The in situ XRD and HRTEM methods show that the observed deactivation occurs as a result of the segregation of calcite and cobalt oxide particles on the perovskite surface. According to the TGA, the observed drop in catalytic activity is also associated with a large loss of oxygen from the perovskite structure.

SUBMITTER: Nikolaeva O

PROVIDER: S-EPMC8468899 | biostudies-literature |

REPOSITORIES: biostudies-literature

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