Preparation of activated carbons from Zonguldak region coals by physical and chemical activations for hydrogen sorption

Activated carbons were prepared by physical and chemical activations from coals collected from two mines (Kilimli and Armutcuk) in Zonguldak region, Turkey under different conditions. Ash content was reduced considerably by use of HCl and HF treatments. Pyrolytic thermal treatments in a temperature range of 600-900 {ring operator} C under N2 flow and chemical treatments using different chemical agents such as KOH, NH4Cl, ZnCl2 were applied to the coal samples from the two mines. N2 adsorption isotherms were obtained at 77.4 K for the thermally and the chemically treated samples and the data were used for the evaluation of the specific surface area, total pore volumes and the average pore sizes of the samples. Higher surface area values were obtained from Kilimli coal samples than Armutcuk. The BET surface area of the Kilimli coal samples which were initially have a value of 1.20 m2/g were increased to 52.62 m2/g after pyrolytic heat treatments at 800 {ring operator} C and increased to a value of 830.5 m2/g by treating the coals with KOH + NH4 Cl mixture at 750 {ring operator} C followed by oxidation of the samples mixed with ZnCl2. The activated carbon samples were prepared for the purpose of their evaluation in hydrogen sorption studies. © 2007 International Association for Hydrogen Energy.

Dergi Adı International Journal of Hydrogen Energy
Dergi Cilt Bilgisi 32
Dergi Sayısı 18
Sayfalar 5005 - 5014
Yayın Yılı 2007
Eser Adı
[dc.title]
Preparation of activated carbons from Zonguldak region coals by physical and chemical activations for hydrogen sorption
Yazar
[dc.contributor.author]
Kopac T.
Yazar
[dc.contributor.author]
Toprak A.
Yayın Yılı
[dc.date.issued]
2007
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
Activated carbons were prepared by physical and chemical activations from coals collected from two mines (Kilimli and Armutcuk) in Zonguldak region, Turkey under different conditions. Ash content was reduced considerably by use of HCl and HF treatments. Pyrolytic thermal treatments in a temperature range of 600-900 {ring operator} C under N2 flow and chemical treatments using different chemical agents such as KOH, NH4Cl, ZnCl2 were applied to the coal samples from the two mines. N2 adsorption isotherms were obtained at 77.4 K for the thermally and the chemically treated samples and the data were used for the evaluation of the specific surface area, total pore volumes and the average pore sizes of the samples. Higher surface area values were obtained from Kilimli coal samples than Armutcuk. The BET surface area of the Kilimli coal samples which were initially have a value of 1.20 m2/g were increased to 52.62 m2/g after pyrolytic heat treatments at 800 {ring operator} C and increased to a value of 830.5 m2/g by treating the coals with KOH + NH4 Cl mixture at 750 {ring operator} C followed by oxidation of the samples mixed with ZnCl2. The activated carbon samples were prepared for the purpose of their evaluation in hydrogen sorption studies. © 2007 International Association for Hydrogen Energy.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
Activated carbon
Konu Başlıkları
[dc.subject]
Adsorption isotherms
Konu Başlıkları
[dc.subject]
Chemical treatment
Konu Başlıkları
[dc.subject]
Coal
Konu Başlıkları
[dc.subject]
Hydrogen sorption
Konu Başlıkları
[dc.subject]
Pyrolysis
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
0360-3199
Sponsor YAYINCI
[dc.description.sponsorship]
The experimental study of this work was carried out by utilizing the Laboratory equipment facilities provided by the project DPT2002K120640 funded by State Planning Organization (DPT), Turkey.
İlk Sayfa Sayısı
[dc.identifier.startpage]
5005
Son Sayfa Sayısı
[dc.identifier.endpage]
5014
Dergi Adı
[dc.relation.journal]
International Journal of Hydrogen Energy
Dergi Sayısı
[dc.identifier.issue]
18
Dergi Cilt Bilgisi
[dc.identifier.volume]
32
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1016/j.ijhydene.2007.08.002
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/7142
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
14
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
09 Şubat 2024 06:57
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Tıklayınız
samples treatments operator} surface chemical obtained increased evaluation Kilimli different prepared studies International Association Hydrogen Energy Armutcuk initially sorption carbon followed values oxidation activated treating mixture purpose pyrolytic hydrogen Activated Higher content thermal Pyrolytic considerably
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