Technogenic Nanoparticles from Coal Carbonization Products

Abstract

Experiments on the extraction of technogenic nanoparticles from coal carbonization products, namely, coke, pitch coke, coal tar, coke dust and carbon deposits from coke and coke-pitch chambers were carried out. With the help of transmission electron microscopy method extracted carbon nanoparticles were investigated. The rationale of the derived nanoparticles technologic origin is given in this paper. The obtained micro-diffraction patterns indicate that the extracted nanoparticles are crystalline solids. Energy-dispersive analysis showed that all of the nanoparticles and micro-particles are composed of carbon. With the help of scanning electron microscope method residual resulting from the storage of aqueous suspensions of nanoparticles were studied. It was found that the residual is composed mainly of carbon microtubes and micro-ribbons.

Modification of Ceramics and Ceramic Glazers with Carbon Nanoadditives, and Properties of the Modified Materials

“…Carbon nanostructures (CNS) obtained from pitch coke (characteristics are given in Table 1) were used according to the procedure described in [12]. Pitch coke was dispersed to grain size < 0.2 mm and then exposed to ultrasonic treatment in distilled water for 30 min at the frequency of 22 kHz with ultrasonic generator power of 100 W. The obtained suspension was centrifuged (rotor speed 8000 rpm) for 15 min to remove amorphous carbon.…”