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Citation: WANG Chang-Shui, MA Jie, ZHANG Xiu-Lan, ZHU Ya-Qi. Oxidative Desulfurization of Diesel Fuel in Ce⁴⁺ Medium under Supersonic Condition[J]. Chinese Journal of Applied Chemistry, ;2007, 24(8): 937-940. shu

Oxidative Desulfurization of Diesel Fuel in Ce⁴⁺ Medium under Supersonic Condition

1.
Department of chemistry, Capital Normal University, Beijing 100037

Corresponding author: MA Jie,
Received Date: 1 September 2006
Available Online: 8 February 2007
Fund Project: 北京市自然科理学基金(6052002)资助项目 (6052002)

Under supersonic condition Ce⁴⁺ may oxidize sulfur compound such as benzothiophene in diesel fuel into sulfonea.By choosing a proper solvent (DMF) to extract sulfonea,the sulfur content in diesel fuel is reduced from 554 mg/L to 25 mg/L with a desulfurization ratio of 95.5% and the sulfur content of diesel oil by oxidization is in line with the quality standard of diesel oil in World Fuel standard Ⅲ.The Ce⁴⁺ oxidation medium may be regenerated and be recycling by electrochemistry method and DMF is also regenerated and recycled.There are no wastes to discard with the best economic efficiency.And this desulfurization method is in accordance with the trend of development of green chemistry.Its best optimal operating conditions are reaction temperature 70℃;pH 0.69;oxidation time 50 min;volume ratio of diesel oil to water 1:9.The Ce⁴⁺ oxidation medium regenerate conditions are anode Pb;cathode C;voltage 3.1 V.The regenerated oxidation medium Ce⁴⁺ has the same desulfurization ability as the new one.
- oxidative desulfurization,
- Ce(SO₄)₂,
- diesel fuel,
- dibenzothiophene (DBT),
- dibenzothiophene sulfonea (DBTO₂)
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Oxidative Desulfurization of Diesel Fuel in Ce4+ Medium under Supersonic Condition

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Oxidative Desulfurization of Diesel Fuel in Ce⁴⁺ Medium under Supersonic Condition