Journal
JOURNAL OF CLEANER PRODUCTION
Volume 161, Issue -, Pages 422-430Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2017.05.112
Keywords
Adsorption; Desulfurization; Activated carbon; Modification; Sulfone
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Funding
- National Natural Science Foundation of China (NNSFC) [U1610108, 21403273]
- Shanxi Scholarship Council of China [2015-122]
- Department of Human Resource and Social Security of Shanxi Province [Y6SW9613B1]
- Department of Science and Technology of Shanxi Province [201605D211006]
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Commercial adsorbents were tested for removing the dibenzothiophene sulfone (DBTO) from a model diesel fuel and organosulfur oxidized products (sulfones) from a real diesel fuel under ambient conditions. Activated carbons treated by concentrated H2SO4 at high temperature showed increasing adsorption capacity and affinity towards DBTO. On the basis of adsorption tests and the characterization by BET, base titration, SEM, XPS, Visible-Raman and FTIR, the acidic-oxygenated groups incorporated to the surface act as adsorption sites for selective adsorption of sulfone. The specific interaction may be formed through the acid-base interaction involving the S=O group. Activated carbon treated by steam at 900 degrees C and followed by concentrated H2SO4 at 250 degrees C displayed significantly enhanced DBTO adsorption performance and a sulfur capacity of 5.8 mg Sig adsorbent for removing organosulfur compound from a real diesel to less than 10 ppmw. (C) 2017 Elsevier Ltd. All rights reserved.
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