Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons

Cigdem Shalaby, Cigdem Shalaby, Xiaoliang Ma, Chunshan Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In order to improve the adsorption performance of the carbon-based adsorbents for sulfur removal from liquid hydrocarbon fuels, two commercial activated carbons (AC), coconut-based (microporous) and coal-based (mesoporous) were oxidized by using different oxidation agents such as nitric acid, ammonium persulfate or hydrogen peroxide. The adsorptive performance of the initial and oxidized AC samples was evaluated in a batch system by using a model diesel with 390 ppmw of sulfur and a real diesel with 325 ppmw of sulfur, respectively. The structural properties and surface chemistry of the starting and the oxidized AC samples were characterized by using the nitrogen adsorption and the temperature programmed desorption (TPD) technique. The effects of the different oxygen groups and textural properties of the oxidized samples on adsorption desulfurization of the model and real diesel fuels were examined and discussed. The results showed that the adsorptive desulfurization is dependent on both the porosity and surface chemistry of the carbons. The improvement of the oxidation modification for adsorptive desulfurization performance is different for mesoporous and microporous ACs.

Original languageEnglish (US)
Title of host publicationAmerican Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
StatePublished - Dec 1 2008
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: Aug 17 2008Aug 21 2008

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
CountryUnited States
CityPhiladelpia, PA
Period8/17/088/21/08

Fingerprint

Desulfurization
Diesel fuels
Activated carbon
Oxidation
Surface chemistry
Sulfur
Adsorption
Carbon
Ammonium persulfate
Nitric Acid
Coal
Temperature programmed desorption
Nitric acid
Hydrocarbons
Hydrogen peroxide
Adsorbents
Hydrogen Peroxide
Structural properties
Nitrogen
Porosity

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Shalaby, C., Shalaby, C., Ma, X., & Song, C. (2008). Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons. In American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers (ACS National Meeting Book of Abstracts).
Shalaby, Cigdem ; Shalaby, Cigdem ; Ma, Xiaoliang ; Song, Chunshan. / Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons. American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers. 2008. (ACS National Meeting Book of Abstracts).
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Shalaby, C, Shalaby, C, Ma, X & Song, C 2008, Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons. in American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers. ACS National Meeting Book of Abstracts, 236th National Meeting and Exposition of the American Chemical Society, ACS 2008, Philadelpia, PA, United States, 8/17/08.

Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons. / Shalaby, Cigdem; Shalaby, Cigdem; Ma, Xiaoliang; Song, Chunshan.

American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers. 2008. (ACS National Meeting Book of Abstracts).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In order to improve the adsorption performance of the carbon-based adsorbents for sulfur removal from liquid hydrocarbon fuels, two commercial activated carbons (AC), coconut-based (microporous) and coal-based (mesoporous) were oxidized by using different oxidation agents such as nitric acid, ammonium persulfate or hydrogen peroxide. The adsorptive performance of the initial and oxidized AC samples was evaluated in a batch system by using a model diesel with 390 ppmw of sulfur and a real diesel with 325 ppmw of sulfur, respectively. The structural properties and surface chemistry of the starting and the oxidized AC samples were characterized by using the nitrogen adsorption and the temperature programmed desorption (TPD) technique. The effects of the different oxygen groups and textural properties of the oxidized samples on adsorption desulfurization of the model and real diesel fuels were examined and discussed. The results showed that the adsorptive desulfurization is dependent on both the porosity and surface chemistry of the carbons. The improvement of the oxidation modification for adsorptive desulfurization performance is different for mesoporous and microporous ACs.

AB - In order to improve the adsorption performance of the carbon-based adsorbents for sulfur removal from liquid hydrocarbon fuels, two commercial activated carbons (AC), coconut-based (microporous) and coal-based (mesoporous) were oxidized by using different oxidation agents such as nitric acid, ammonium persulfate or hydrogen peroxide. The adsorptive performance of the initial and oxidized AC samples was evaluated in a batch system by using a model diesel with 390 ppmw of sulfur and a real diesel with 325 ppmw of sulfur, respectively. The structural properties and surface chemistry of the starting and the oxidized AC samples were characterized by using the nitrogen adsorption and the temperature programmed desorption (TPD) technique. The effects of the different oxygen groups and textural properties of the oxidized samples on adsorption desulfurization of the model and real diesel fuels were examined and discussed. The results showed that the adsorptive desulfurization is dependent on both the porosity and surface chemistry of the carbons. The improvement of the oxidation modification for adsorptive desulfurization performance is different for mesoporous and microporous ACs.

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Shalaby C, Shalaby C, Ma X, Song C. Adsorptive desulfurization of diesel fuels by oxidation-modified activated carbons. In American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers. 2008. (ACS National Meeting Book of Abstracts).