Abstract: Carbon-supported ruthenium catalysts modified with barium and cesium were prepared and studied. In order to minimize the methanation process (hydrogenation of the carbon), carbonaceous composite material Sibunit used as a support in the present work was additionally subjected to the graphitization procedure at 1900 °C. This treatment affects significantly properties of the support decreasing its specific surface area from 320 to 46 m2/g. According to the X-ray diffraction data, an increase of both the thickness and the number of graphene layers in the packet (from 11 to 26) takes place. Raman spectroscopy has shown an appearance of the line at 1617 cm-1, which testifies towards graphite formation. The dispersity of ruthenium particles was close in both the cases (average particle size of about 10 nm). At the same time, the activity of the sample based on the graphitized support was in 1.6 times lower if compare with initial support, while the thermal stability was better.

Cite: Iost K.N. , Borisov V.A. , Temerev V.L. , Surovikin Y.V. , Trenikhin M.V. , Arbuzov A.B. , Shlyapin D.A. , Tsyrul'nikov P.G.
Effect of the carbon support graphitization on the thermal stability and activity of the Ru-Ba-Cs/C catalyst
14th International Conference on Fundamental and Applied Aspects of Physical Chemistry 24-28 Sep 2018