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      저자 : Diwakar Z. Shende (검색결과 2 건)
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      • Extractive Desulfurization of Liquid Fuels by Energy Efficient Green Thiazolium based Ionic Liquids

        Dharaskar, Swapnil A.,Wasewar, Kailas L.,Varma, Mahesh N.,Shende, Diwakar Z.,Yoo, Chang Kyoo American Chemical Society 2014 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH - Vol.53 No.51

        <P>In the present paper, experimental data on extractive desulfurization of liquid fuel using 3-butyl-4-methylthiazolium thiocyanate [BMTH]SCN is presented. The Fourier transform infrared (FTIR), <SUP>1</SUP>H NMR, and <SUP>13</SUP>C NMR analyses have been discussed for the molecular confirmation of synthesized [BMTH]SCN. Further, conductivity, solubility, and viscosity analyses of [BMTH]SCN were performed. The effects of reaction time, reaction temperature, sulfur compounds, ultrasonication, and recycling of [BMTH]SCN without regeneration on removal of dibenzothiophene from liquid fuel were also investigated. In the extractive desulfurization process, the removal of dibenzothiophene in octane was 81.2% for mass ratio of 1:1 in 30 min at 30 °C under the mild reaction conditions. Thiazolium ionic liquids could be reused five times without a significant decrease in activity. Also, the desulfurization of real fuels, multistage extraction was examined. The data and results provided in present paper explore the significant insights of thiazolium based ionic liquids as novel extractant for extractive desulfurization of liquid fuels.</P>

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        Relative basicity approach for separation of a-toluic acid with triglycerides of fatty acids by reactive extraction

        Kanti Kumar Athankar,Kailas L Wasewar,Mahesh N. Varma,Diwakar Z. Shende 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.22 No.-

        Extraction of a-toluic acid from aqueous solution has drawn attention due to its ample range ofbiological, antibacterial, analgesic, and virucidal properties. In the present paper, reactive separation ofa-toluic acid with tri-n-butyl phosphate dissolved in triglycerides of fatty acids such as castor oil,soybean oil and sunflower oil has been investigated to evaluate the performance of the diluents andextractants in reactive extraction process. The experimental results were presented as overalldistribution coefficient (KD), loading factor (f), extraction efficiency (E%), and overall equilibriumconstant (Eab) and observed in the range of data 4.4–45.7, 0.006–0.066, 81.6–97.9, and 15.1–28.1,respectively. Further relative basicity approach has been extended to represent the experimental results. The model is best suited to experimental results. The use of triglycerides of fatty acids (natural diluents)such as castor oil, soybean oil and sunflower oil can reduce the toxicity up to certain levels. Hence, allthree diluents can be used to avoid the toxicity effect.

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