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Cited by 227

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Importance of Structural and Chemical Heterogeneity of Activated Carbon Surfaces for Adsorption of Dibenzothiophene

Ania, Conchi O., Bandosz, Teresa J.·2005·Langmuir

Abstract

The performance of various activated carbons obtained from different carbon precursors (i.e., plastic waste, coal, and wood) as adsorbents for the desulfurization of liquid hydrocarbon fuels was evaluated. To increase surface heterogeneity, the carbon surface was modified by oxidation with ammonium persulfate. The results showed the importance of activated carbon pore sizes and surface chemistry for the adsorption of dibenzothiophene (DBT) from liquid phase. Adsorption of DBT on activated carbons is governed by two types of contributions: physical and chemical interactions. The former include dispersive interactions in the microporous network of the carbons. While the volume of micropores governs the amount physisorbed, mesopores control the kinetics of the process. On the other hand, introduction of surface functional groups enhances the performance of the activated carbons as a result of specific interactions between the acidic centers of the carbon and the basic structure of DBT molecule as well as sulfur-sulfur interactions.

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Metadata

Authors
Ania, C. O., & Bandosz, T. J.
Venue
Langmuir
Published
2005-07-19
Volume
21
Issue
17
Pages
7752-7759
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W2007471871
Cited by
227
References
1
FWCI
15.91
Type
journal article
Language
en
Open access
closed

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