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The graphite dispergation in the thermo vacuum apparatus

Kutovyi V., Lutsenko A., Tkachenko V., Nukolaenko A., Germanov A.

Journal of New Technologies in Environmental Science

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2017

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Vol. 1, nr 2

81--85

EN

The priority direction of development of science and technology is research and development of new materials, corresponding to the different needs of the development of society, meets international requirements. Especially nanotechnology is rapidly developing in recent years, which provides a new way for the development of areas such as materials science, physics, chemistry, biology, computer science, energy, engineering, and medicine. Among the methods for obtaining monodispersed materials, one can single out methods: electro spark erosion [1], spraying [2], precipitation from the gas phase [3], mechanical grinding [4], chemical [5], plasma [6]. The past decade has grown interest a monodispersed materials in significantly. This is because such objects exhibit new properties that differ significantly from the properties of matter in the macroscopic state. The priority direction of nanotechnology development is research and development of nano-carbon materials: fullerenes, carbon nanotubes and composite nano-diamond materials. Promising materials in this regard are structural modifications of carbon fullerenes and diamonds, in which the most attractive are a combination of record values of various physic-chemical parameters and unique electron-emission properties. The nano-carbon materials can have metallic conductivity and high-temperature superconductivity, be dielectrics, semiconductors, superconducting compounds. They used are in displays with low-voltage field emission, in hydrogen energy as storage containers for hydrogen, in nano-electronics [7]. The analysis of the world experience in the formation of national and regional programs on new scientific and technical areas demonstrates the need to identify some key problems in the development of nanomaterials and nanotechnologies. It is necessary to develop new nanotechnologies to create nanomaterials that can significantly affect the economy, technology, production, health, ecology, education, defense and state security. The areas of application of nanomaterials are practically unlimited.

2

Removal of SO2 from gases on carbon materials

Narkiewicz U., Pietrasz A., Pełech I., Arabczyk W.

Polish Journal of Chemical Technology

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2012

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Vol. 14, nr 1

41-45

EN

The aim of the work is to describe a capability of the active carbon CARBON L-2-4 (AC) and of the nanocarbon (NC) materials containing iron nanoparticles to continuously remove SO2 from air. The carbon nanomaterials (NC) containing iron nanoparticles were synthesised using a chemical vapor deposition method - through catalytic decomposition of ethylene on nanocrystalline iron. The process of SO2 removal was carried out on dry and wet with water carbon catalyst (AC or NC) and was studied for inlet SO2 concentration 0.3 vol.% in the presence of O2, N2 and H2O, in the temperature range of 40-80°C.

3

Catalytic Decomposition of Ethylene on Iron - the Effect of Process Conditions on the Yield and Morphology of Nanocarbon Products

Narkiewicz U., Pełech I., Arabczyk W., Biedermann K., Tüschner Ch.

Polish Journal of Chemistry

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2008

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Vol. 82, nr 9

1743-1752

EN

The catalytic decomposition of ethylene on nanocrystalline iron was investigated. The processes were carried out in a horizontal tube reactor under atmospheric pressure and in the temperature range of 500-800°C. Various process parameters such as: reaction time, temperature, C2H4:H2 ratio, C2H4:Arratio have been examined to determine the effect of these parameters on both the yield of carbon and the morphology of products. The quality of the products was characterized by means of transmission electron microscopy (TEM). According to the observed results, ethylene can be used as a very effective carbon source for growing multi-walled carbon nanotubes (MWCNTs). The meandiameter of the obtained MWCNTs was 20-30 nm. The length of carbon nanotubes in creased with reaction time. The carbon nanotubes obtained in presence of hydrogen or argon in reaction mixture were straighter and less entangled than carbon nanotubes obtained through de composition of pure ethylene.