Activated mesocarbon microbeads

Fig. 4. Experimental (target) and simulated carbon-carbon radial distribution function for an activated mesocarbon microbead adsorbent [32]. The RDFs are reported in the form 471 r fi[g(r) — 1], where p is the average carbon density and r is the carbon pair separation distance noted on the horizontal axis. The simulated RDFs for the initial and converged (dashed line) model structures are shown, with numbered peaks referenced in the text.

Figure 5 1 Activated mesocarbon microbead RAIC model, (a) Structural representation of the converged structure. The spheres represent carbon atoms that are shown at a scale much less than their van der Waals radii for reasons of clarity, (b) C-C radial distribution functions (RDF). The experimental RDF (solid line), the simulated, converged RDF (long-dashed line), and the initial simulated RDF (dotted line) are shown. The numbers indicate the different peaks of the RDF. (Adapted from Ref. [33].)...

Torchala, K., K. Kierzek, and J. Machnikowski. 2012. Capacitance behavior of KOH activated mesocarbon microbeads in different aqueous electrolytes. Electrochimica Acta 86 260-267. 

Wu, C., X. Wang, B. Ju et al. 2013. Supercapacitive behaviors of the nitrogen-enriched activated mesocarbon microbead in aqueous electrolytes. Journal of Solid State Electrochemistry 17 1693-1700. 

Coals mesophase pitch coal chars coal tar pitch carbon mesocarbon microbeads, carbon fibers semi-coke, calcined coke activated carbons premium cokes, carbon fibers, binder and matrix... 

Activation is often conducted by processing with steam or chemical agents. Carbons activated by steam can be prepared from raw materials such as coal, peat, or lignite, which are carbonized and reacted with high-temperature water steam, in the process where fraction of carbon atoms are gasified, leaving beside porous structure. Chemically, carbon can also be activated with phosphoric acid. So-called mesocarbon microbeads (MCMBs) were produced from coal tar pitch in the Osaka... 

Earlier, such catalyst was used for the preparation of a 100 W rechargeable bipolar zinc-oxygen battery [328]. Also, nanostructured Mn02 combined with mesocarbon microbeads was prepared and used [329] in such batteries as a catalyst for oxygen reduction, which has a very good electrocatalytic activity with respect to oxygen, and in comparison with electrolytic Mn02. Prepared with this material, the all solid-state zinc-air cell... 

As described in Section 3.3.3.1, the PFA-P7-H carbon better inherits the structural regularity from the parent zeolite than the other carbons. Moreover, the pore structure of this carbon is unique and it has never been found in any type of carbon. Its detail will be explained in this section in comparison with three commercial activated carbons MSC-30 (Kansai Coke and Chemicals), M-30 (Osaka Gas), and ACF-20 (Osaka Gas). The former two carbons were prepared from petroleum coke and mesocarbon microbeads, respectively, and both were activated with KOH. The last sample was activated with carbon fibers (ACFs). All are characterized by a large BET SSA. 

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