Author(s): Youliang Cheng | Tiehu Li | Deqi Jing | Fengjuan Li | Qiang Zhuang
Journal: Carbon : Science and Technology
ISSN 0974-0546
Volume: 2;
Issue: 2;
Start page: 103;
Date: 2009;
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Keywords: Carbon spheres | carbon beads | synthesis | PTSA
ABSTRACT
Mesophase spheres have been synthesized by heat-treating a medium coal tar pitch at 420 ºC for 2 hours in the presence of P-toluene sulphonic acid (PTSA). The effect of PTSA on synthesis of mesophase spheres had been studied. It was found that PTSA promotes the formation of mesophase spheres in coal tar pitch through acceleratingpolymerization of aromatic hydrocarbons. PTSA content between 3 and 5 wt % gave similar size spheres, beyond which as the PTSA content increases, the size of spheres increases. 5 wt % PTSA gives uniform spheres with small size, good spherical shape and smooth surface.
Journal: Carbon : Science and Technology
ISSN 0974-0546
Volume: 2;
Issue: 2;
Start page: 103;
Date: 2009;
VIEW PDF
DOWNLOAD PDF Original pageKeywords: Carbon spheres | carbon beads | synthesis | PTSA
ABSTRACT
Mesophase spheres have been synthesized by heat-treating a medium coal tar pitch at 420 ºC for 2 hours in the presence of P-toluene sulphonic acid (PTSA). The effect of PTSA on synthesis of mesophase spheres had been studied. It was found that PTSA promotes the formation of mesophase spheres in coal tar pitch through acceleratingpolymerization of aromatic hydrocarbons. PTSA content between 3 and 5 wt % gave similar size spheres, beyond which as the PTSA content increases, the size of spheres increases. 5 wt % PTSA gives uniform spheres with small size, good spherical shape and smooth surface.
