Article Abstract:
Structure, thermal stability and deformation of multibranched carbon nanotubes, which are grown by the pyrolysis of acetylene in an anodic aluminum oxide (AAO) template with or without the catalytic Co particles at the pore bottom, is described. Results indicate that the internal surface of the alumina pores play an important role in the decomposition of acetylene, since the tube walls have the same structures in the presence or absence of Co particles.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
At 77 K and moderate pressure, it is demonstrated that single-walled carbon nanotubes (SWNTs) exhibit excellent properties of physical adsorption that show a value of computed gravimetric density storage equal to 11.24 wt percent. It is observed that the latter value leads to the conjecture that these nanoscale-dimension materials could play a determining role in the improvement of hydrogen storage by adsorption.
User Contributions:
Comment about this article or add new information about this topic:
Article Abstract:
A purification method is presented for extracting the Fe metal catalysts and non-SWNT carbon from nanotubes produced by the high pressure CO disproportionation (HiPco) process and a multistage purification method is investigated. Metal catalyzed oxidation at low temperature is shown to selectively remove non-SWNT carbon and permit extraction of iron with concentrated HCl.
User Contributions:
Comment about this article or add new information about this topic: