Chemistry, Physics and Technology of Surface, 2012, 3 (1), 102-107.

Nano- and Microfibres from Coal Tar Pitch Coke



V. M. Shmalko

Abstract


In order to determine the mechanism of nucleation and growth of nanostructures under coking pitch, experimental studies have been carried out on extraction of nanoparticles from the samples of industrial pitch coke. The nanoparticles have been examined using electron (TEM, SEM) and optical microscopy (in water and in dry form). It has been found that when suspensions are storaged, spiral and zigzag microfibres are formed. The microbends (probably having internal channels) and intergrowths ("hedgehogs") are found. The structures formed due to self-organization of nanoparticles may reach up to 10 mm in lenth. The growth of flat microfibres is happened under coking pitch whereas fibres lead to arise of pitch coke anisotropy.

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