Microporosity Development of Herringbone Carbon Nanofibers by RbOH Chemical Activation

Microporosity Development in Coal-Based Carbon Foams

This paper presents a novel method of manufacturing carbon foams from coals with a bimodal porosity structure (macroand microporosity), by means of a carbonisation process at 450 or 475 °C that produces the carbon foam, followed by chemical activation with zinc chloride at 500 °C. The activation agent influences the development of macroporosity during the foaming step and gives rise to micropor...

Microporosity in carbon blacks

Microporous carbon blacks can be characterized by the same techniques as activated carbons, using the classical DR equation and comparison plots based on non-porous materials. The CO adsorption isotherm at 273 K, combined with 2 computer modelling, also leads to an assessment of microporosity. The results agree with independent techniques such as immersion calorimetry into liquids of variable m...

Enhancement of Microporosity through Physical Activation

Micro porous carbons are used for the sorption/separation of light gases, where as the carbon with broad pore size is applied for removal of large organic molecules. In this work activated carbon was prepared from natural material pine wood. Pine wood monoliths were carbonized in inert nitrogen atmosphere for different intervals of times. To enhance the surface area and to develop interconnecti...

Alignment mechanism of carbon nanofibers produced by plasma-enhanced chemical-vapor deposition

We report experimental evidence showing a direct correlation between the alignment of carbon nanofibers ~CNFs! prepared by plasma-enhanced chemical-vapor deposition and the location of the catalyst particle during CNF growth. In particular, we find that CNFs that have a catalyst particle at the tip ~i.e., growth proceeds from the tip! align along the electric-field lines, whereas CNFs with the ...

Non-Catalytic, Low-Temperature Synthesis of Carbon Nanofibers by Plasma-Enhanced Chemical Vapor Deposition