The effect of impregnation of activated carbon with SnCl2.2H2O on its porosity, surface composition and CO gas adsorption

Ma'an F. Al-Khatib, Sunny E. Iyuke, Abu Bakar Mohamad, Wan Ramli Wan Daud, Abdul Amir H. Kadhum, Azmi M. Shariff, Mohd. Ambar Yarmo

Research output: Contribution to journalArticle

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Abstract

Activated carbon was impregnated with different concentrations of SnCl2.2H2O. Unimpregnated and impregnated activated carbons were analysed by means of physical adsorption and XPS and were tested for CO gas adsorption in a PSA system. The adsorption isotherms of N2 at 77 K were measured and showed a Type I isotherm indicating microporous carbon for all the samples. The surface area, pore volume and pore size distribution were reduced with impregnation. XPS analysis showed an increase in the intensity of Sn3d peak with impregnation. The impregnated activated carbon showed a very good adsorption ability of CO gas compared to the unimpregnated sample. The adsorptive species responsible for CO gas adsorption was confirmed to be SnO2 instead of SnO due to the former's comparative thermodynamic stability.

Original languageEnglish
Pages (from-to)1929-1936
Number of pages8
JournalCarbon
Volume40
Issue number11
DOIs
Publication statusPublished - Sep 2002

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Gas adsorption
Carbon Monoxide
Impregnation
Surface structure
Activated carbon
Porosity
X ray photoelectron spectroscopy
Adsorption
Adsorption isotherms
Pore size
Isotherms
Thermodynamic stability
Carbon
Gases

Keywords

  • A. Activated carbon
  • B. Impregnation
  • BET surface area
  • C. Adsorption
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

The effect of impregnation of activated carbon with SnCl2.2H2O on its porosity, surface composition and CO gas adsorption. / Al-Khatib, Ma'an F.; Iyuke, Sunny E.; Mohamad, Abu Bakar; Wan Daud, Wan Ramli; Kadhum, Abdul Amir H.; Shariff, Azmi M.; Yarmo, Mohd. Ambar.

In: Carbon, Vol. 40, No. 11, 09.2002, p. 1929-1936.

Research output: Contribution to journalArticle

Al-Khatib, Ma'an F. ; Iyuke, Sunny E. ; Mohamad, Abu Bakar ; Wan Daud, Wan Ramli ; Kadhum, Abdul Amir H. ; Shariff, Azmi M. ; Yarmo, Mohd. Ambar. / The effect of impregnation of activated carbon with SnCl2.2H2O on its porosity, surface composition and CO gas adsorption. In: Carbon. 2002 ; Vol. 40, No. 11. pp. 1929-1936.
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AU - Al-Khatib, Ma'an F.

AU - Iyuke, Sunny E.

AU - Mohamad, Abu Bakar

AU - Wan Daud, Wan Ramli

AU - Kadhum, Abdul Amir H.

AU - Shariff, Azmi M.

AU - Yarmo, Mohd. Ambar

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N2 - Activated carbon was impregnated with different concentrations of SnCl2.2H2O. Unimpregnated and impregnated activated carbons were analysed by means of physical adsorption and XPS and were tested for CO gas adsorption in a PSA system. The adsorption isotherms of N2 at 77 K were measured and showed a Type I isotherm indicating microporous carbon for all the samples. The surface area, pore volume and pore size distribution were reduced with impregnation. XPS analysis showed an increase in the intensity of Sn3d peak with impregnation. The impregnated activated carbon showed a very good adsorption ability of CO gas compared to the unimpregnated sample. The adsorptive species responsible for CO gas adsorption was confirmed to be SnO2 instead of SnO due to the former's comparative thermodynamic stability.

AB - Activated carbon was impregnated with different concentrations of SnCl2.2H2O. Unimpregnated and impregnated activated carbons were analysed by means of physical adsorption and XPS and were tested for CO gas adsorption in a PSA system. The adsorption isotherms of N2 at 77 K were measured and showed a Type I isotherm indicating microporous carbon for all the samples. The surface area, pore volume and pore size distribution were reduced with impregnation. XPS analysis showed an increase in the intensity of Sn3d peak with impregnation. The impregnated activated carbon showed a very good adsorption ability of CO gas compared to the unimpregnated sample. The adsorptive species responsible for CO gas adsorption was confirmed to be SnO2 instead of SnO due to the former's comparative thermodynamic stability.

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