Preparation and characterization of activated carbon from cotton stalks in a two-stage process

Mustafa Özdemir; Tamer Bolgaz; Cafer Saka; Ömer Şahin

doi:10.1016/j.jaap.2011.05.010

Preparation and characterization of activated carbon from cotton stalks in a two-stage process

Mustafa Özdemir, Tamer Bolgaz, Cafer Saka^*, Ömer Şahin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

90 Citations (Scopus)

Abstract

Activated carbons are prepared from cotton stalks by chemical activation with ZnCl₂, H₂SO₄ and physical activation using CO₂ and steam-CO₂ mixture for temperatures of 750, 850 and 900 °C. The effects of activation temperature and duration time, impregnation concentration of agent, impregnation times, and physical activating agent are examined. These materials are characterized by adsorption/desorption of N₂ to determine the BET areas, thermogravimetric analysis (TG, DTA), FTIR and scanning electron microscopy (SEM). ZnCl₂ under CO₂ atmosphere was found more effective than H₂SO ₄ as a chemical reagent under identical conditions in terms of porosity development. The maximum BET surface area is found to be 2053 m ²/g for active carbons produced with ZnCl₂ activation under CO₂ atmosphere.

Original language	English
Pages (from-to)	171-175
Number of pages	5
Journal	Journal of Analytical and Applied Pyrolysis
Volume	92
Issue number	1
DOIs	https://doi.org/10.1016/j.jaap.2011.05.010
Publication status	Published - Sept 2011
Externally published	Yes

Keywords

Activated carbon
Chemical activation
Cotton stalks
Physical activation

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10.1016/j.jaap.2011.05.010

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title = "Preparation and characterization of activated carbon from cotton stalks in a two-stage process",

abstract = "Activated carbons are prepared from cotton stalks by chemical activation with ZnCl2, H2SO4 and physical activation using CO2 and steam-CO2 mixture for temperatures of 750, 850 and 900 °C. The effects of activation temperature and duration time, impregnation concentration of agent, impregnation times, and physical activating agent are examined. These materials are characterized by adsorption/desorption of N2 to determine the BET areas, thermogravimetric analysis (TG, DTA), FTIR and scanning electron microscopy (SEM). ZnCl2 under CO2 atmosphere was found more effective than H2SO 4 as a chemical reagent under identical conditions in terms of porosity development. The maximum BET surface area is found to be 2053 m 2/g for active carbons produced with ZnCl2 activation under CO2 atmosphere.",

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AU - Özdemir, Mustafa

AU - Bolgaz, Tamer

AU - Saka, Cafer

AU - Şahin, Ömer

PY - 2011/9

Y1 - 2011/9

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AB - Activated carbons are prepared from cotton stalks by chemical activation with ZnCl2, H2SO4 and physical activation using CO2 and steam-CO2 mixture for temperatures of 750, 850 and 900 °C. The effects of activation temperature and duration time, impregnation concentration of agent, impregnation times, and physical activating agent are examined. These materials are characterized by adsorption/desorption of N2 to determine the BET areas, thermogravimetric analysis (TG, DTA), FTIR and scanning electron microscopy (SEM). ZnCl2 under CO2 atmosphere was found more effective than H2SO 4 as a chemical reagent under identical conditions in terms of porosity development. The maximum BET surface area is found to be 2053 m 2/g for active carbons produced with ZnCl2 activation under CO2 atmosphere.

KW - Activated carbon

KW - Chemical activation

KW - Cotton stalks

KW - Physical activation

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Preparation and characterization of activated carbon from cotton stalks in a two-stage process

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