کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5368998 | 1388415 | 2006 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation of activated carbons previously treated with hydrogen peroxide: Study of their porous texture Preparation of activated carbons previously treated with hydrogen peroxide: Study of their porous texture](/preview/png/5368998.png)
Cedar wood was used as raw material for the preparation of activated carbons by treatment with hydrogen peroxide of different concentrations. The samples were next carbonised and activated under CO2 atmosphere. The activated carbons were characterised by means of the adsorption isotherms of N2 at 77Â K, as well as by applying the Density Functional Theory (DFT) method and mercury porosimetry. The experimental results corresponding to the activated samples indicate a more remarkable porous development as a consequence of the treatment with hydrogen peroxide, probably due to the elimination of surface complexes produced during the activation step. The DFT diagrams point out that the activating treatment favours the development of medium and narrow-size micropores whereas the carbonisation process leads to the development of wide micropores of size close to that corresponding to mesopores.
Journal: Applied Surface Science - Volume 252, Issue 17, 30 June 2006, Pages 5984-5987