Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/22238
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    標題: Enhance Efficiency of Tetraoctylammonium Fluoride Applied to Ultrasound-Assisted Oxidative Desulfurization (UAOD) Process
    作者: Meng-Wei Wan
    Teh-Fu Yen
    貢獻者: 環境工程與科學系
    關鍵字: Desulfurization
    Phase transfer agent
    Tetraoctylammonium fluoride
    Ultrasound-assisted oxidative desulfurization
    Diesel fuel
    日期: 2007-03
    上傳時間: 2010-01-15 11:18:06 (UTC+8)
    摘要: The ultrasound-assisted oxidative desulfurization (UAOD) process has been applied to a number of diesel fuels containing varying amounts of sulfur content. The transition metal complex and quaternary ammonium salts (QAS) phase transfer agents have been applied with aqueous hydrogen peroxide as oxidizing agent. High yield of 3-bromobenzothiophene, and 2-bromobenzothiphene sulfone has been found from phase transfer agents containing tetraoctylammonium bromide. No contaminates such as bromo compound derivates had been isolated when the new fluoride phase transfer agent was used. Selectivity was particularly high for this process as demonstrated by selective ions mass spectrometry. The experiment also demonstrated that the catalyst could be recovered for reuse. Furthermore, the hydrogen peroxide provides a good performance, and the oxidation will proceed as low as 0.25%.
    關聯: Applied Catalysis A: General 319(1): p.237-245
    顯示於類別:[環境工程與科學系(所)] 期刊論文

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