Preparation of activated carbons from cherry stones by activation with potassium hydroxide |
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Authors: | M Olivares-Marín C Fernández-González V Gómez-Serrano |
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Institution: | a Departamento de Q. Inorgánica, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain b Área de Ciencia de Materiales e Ingeniería Metalúrgica, Escuela de Ingenierías Industriales, Universidad de Extremadura, Avda. de Elvas s/n, 06071 Badajoz, Spain |
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Abstract: | Using cherry stones, the preparation of activated carbon has been undertaken in the present study by chemical activation with potassium hydroxide. A series of KOH-activated products was prepared by varying the carbonisation temperature in the 400-900 °C range. Such products were characterised texturally by gas adsorption (N2, −196 °C), mercury porosimetry, and helium and mercury density measurements. FT-IR spectroscopy was also applied. The carbons prepared as a rule are microporous and macroporous solids. The degree of development of surface area and porosity increases with increasing carbonisation temperature. For the carbon heated at 900 °C the specific surface area (BET) is 1624 m2 g−1, the micropore volume is 0.67 cm3 g−1, the mesopore volume is 0.28 cm3 g−1, and the macropore volume is 1.84 cm3 g−1. |
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Keywords: | 61 43 Gt 68 43 &minus h 81 05 Rm 81 05 Uw 82 45 Jn |
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