Effect of a structure-size factor on the catalytic properties of complex oxide compositions in the reaction of deep methane oxidation |
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Authors: | M. R. Kantserova S. N. Orlik |
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Affiliation: | (1) Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Kiev, Ukraine |
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Abstract: | The following catalysts for deep methane oxidation were studied using X-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, temperature-programmed reduction with hydrogen, and temperature-programmed ammonia desorption: highly dispersed supported aluminum-manganese and cobalt-zirconium catalysts; bulk and supported nanosized spinel ferrites. It was found that structure-size factors in complex oxide nanocomposites are responsible for differences in the catalytic properties (activity and thermal stability). The efficiency of the supported ferrite and cobalt-zirconium catalysts depends on both the oxygen-catalyst bond strength and the acid properties of catalyst surfaces. |
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