Synthesis and Investigation of New Hybrid Materials Based on Carbon Nanofibres and Solid Structured Carriers
N. V. SHIKINA1, Z. R. ISMAGILOV1,2
1Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: carbon nanofibres, carbon nanotubes, ceramics, honeycomb structure monoliths, hybrid materials, composites
Pages: 611-620
Abstract
Hybrid carbon materials based on carbon nanofibres and ceramic blocks made of Al2O3, ZrO2, TiO2, and aluminosilicate (AlSi) were prepared by means of catalytic chemical vapour deposition of methane over Ni0 particles supported on monolithic carriers. The initial ceramic carriers, catalysts and hybrid materials were studied by means of XRD, TEM, SEM, IR spectroscopy, thermal analysis and low-temperature nitrogen adsorption. By varying the reaction conditions and catalyst composition, samples with the carbon phase content from 1.7 to 12 mass % were obtained. It is established that the activity of catalysts depends on the chemical nature of the carrier and increases in the sequence TiO2 < Al2O3 < AlSi < ZrO2. The chemical composition and acid-base properties of the carrier surface determine the structure and morphology of the carbon phase. Carbon nanofibers modify the porous structure of ceramic materials, causing an increase in the specific surface area and mechanical strength of the resulting hybrids compared with the original ceramic carriers.
DOI: 10.15372/CSD2021340
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