01777nas a2200145   4500008004100000245006300041210006200104260000800166300000900174490000700183520130100190100002401491700002201515856009401537       2017                        eng d00aReaction engineering of urea alcoholysis: alkyl carbamates0 aReaction engineering of urea alcoholysis alkyl carbamates  cJAN  a9-190 v243 aUrea alcoholysis is a reversible reaction generating alkyl carbamate and ammonia as products. The reaction can be performed non-catalytically or in presence of catalyst. The first step in Reaction engineering analysis is to finalize the reactor configuration. In this case it is important to determine the necessity of reactive separation (simultaneous reaction and separation). This has been addressed by first establishing the reversibility of the reaction through theoretical and experimental investigation. Based on this analysis, an experimental setup comprising tubular reactor and a separator has been built. Experiments have been performed for different alcohols at different flow rates and temperatures. The experimental data is used to establish kinetic parameters. Systematic reaction engineering analysis based on multi-stage ideal reactors with and without simultaneous mass transfer is then carried out in terms of three dimensionless numbers. The analysis presented in this work can be readily applied to a general class of reversible reactions with volatile products and the methodology can be used to develop and design reactors for them. The approach and results presented here will be useful to establish optimal reactor configuration and design for urea alcoholysis reactions.1 aMote, Dhananjay, R.1 aRanade, Vivek, V.  uhttps://library.ncl.res.in/content/reaction-engineering-urea-alcoholysis-alkyl-carbamates02040nas a2200277   4500008004100000022001400041245014700055210006900202260000900271300001400280490000700294520113500301653001201436653000801448653000901456653001301465653001201478653001201490100002601502700002501528700002401553700002201577700001901599700002001618856012401638       2023                        eng d  a0149-639500aLiquid-liquid equilibria of ternary mixtures containing Aniline plus Toluene plus water at elevated temperatures: measurements and correlation0 aLiquidliquid equilibria of ternary mixtures containing Aniline p  cNOV   a2718-27250 v583 a<p>
	Liquid-liquid equilibrium (LLE) data for the ternary system, Aniline + Toluene + Water, was measured at different temperatures of 298.15 K, 313.15 K and 323.15 K under atmospheric pressure with the help of High-Performance Liquid Chromatography (HPLC) analysis and Karl-Fischer technique. The efficiency of Toluene to extract Aniline from aqueous phase was then quantified in terms of the distribution coefficient and separation factor based on the tie line data. The system showed very good separation ability quantified in terms of high values of distribution factor (average around 7) and separation factors (as high as 1000). The experimental tie line data was verified by Hand and Othmer-Tobias equations. The LLE data was also correlated using NRTL and UNIQUAC models and both of them were able to represent the behavior of the system accurately when tested against experimental results. Toluene has been demonstrated to be very efficient to extract Aniline from reaction mixture, which is typically a by-product in hydrogenation of nitrobenzene, a process commercially used to produce p-Aminophenol in industry.</p>
10aAniline10aLLE10aNRTL10aTie line10aToluene10aUNIQUAC1 aGaikwad, Shashank, G.1 aPathak, Abhishek, A.1 aMote, Dhananjay, R.1 aGogate, Parag, R.1 aSingh, Shivani1 aModhera, Bharat  uhttps://library.ncl.res.in/content/liquid-liquid-equilibria-ternary-mixtures-containing-aniline-plus-toluene-plus-water