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Whereas the amount of cyclodextrin (CD) adsorbed onto the large-pore activated carbon A (AC-A) increased with the number of glucose units, the amount adsorbed onto the small-pore activated carbon B (AC-B) showed the opposite tendency. This behavior can be accounted for in terms of a molecular exclusion. It is known that a good linear relationship is obtained between the Freundlich constants log K...
In order to obtain basic data for the manufacture of porous carbon materials from various woody wastes, porous carbons were prepared from wood of the Japanese cypress by carbonizing at 900°C and the effect of holding time at 900°C on the properties of the carbons obtained was examined. A slight amount of air entered the vessel for carbonization during the heat treatment at 900°C and an activation...
Pore volume and macropore-size distribution of charcoal produced from the wood of a wide variety of trees were measured by mercury intrusion porosimetry and the following results were obtained.The shape of the distribution curve was remarkably dependent on wood type. The total pore volume of charcoal produced by carbonizing at high temperature was less than that of charcoal produced by carbonizing...
Microporous carbons were produced by an activation using air from Japanese cypress charcoal. Effects of activation time, activation temperature, and air flow rate on the yield, porosity, and adsorption property of the microporous carbons were examined and the following results were obtained:(1) Weight loss increases linearly with activation time.(2) The formation efficiency of pores which have an...
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