The effect of PTSA on preparation of mesophase carbon spheres
Journal Title: Carbon - Science and Technology - Year 2009, Vol 2, Issue 2
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 accelerating polymerization 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.
Authors and Affiliations
Youliang Cheng, Tiehu Li, Deqi Jing, Fengjuan Li, Qiang Zhuang
Anaerobic co-digestion of food waste and septage – A waste to energy project in Nashik city
The samples for food waste (FW) and septage were collected from six localities of Nashik city. Physical and chemical characterizations of the wastes were carried out. A Biomethanation potential (BMP) assay was developed...
Full-Wave Techniques for the Analysis of Electrodynamics and Coherent Quantum Transport in Graphene Nanodevices
We report on full-wave techniques in the frequency (energy)-domain and the time-domain, aimed at the investigation of the combined electromagnetic-coherent transport problem in carbon based nanostructured materials and d...
Frequency, delay and velocity analysis for intrinsic channel region of carbon nanotube field effect transistors
Gate wrap around field effect transistor is preferred for its good channel control. To study the high frequency behavior of the device, parameters like cut-off frequency, transit or delay time, velocity are calculated an...
Optimization of growth temperature of multi-walled carbon nanotubes synthesized by spray pyrolysis method and application for arsenic removal
Multi-walled carbon nanotubes have been synthesized at different temperatures ranging from 550 °C to 750 °C on silica supported Fe-Co catalyst by spray pyrolysis method using Citrus limonum oil under nitrogen atmosphere....
Physico-chemical characterization studies of activated carbon derived from Sterculia Quadrifida seed shell waste
A carbonaceous adsorbent prepared from the Sterculia Quadrifida shell by various activation process, viz., Acid process, Chloride process, Carbonate process and Sulphate process are successfully reported. It shows excell...