01985nas a2200169   4500008004100000022001400041245011900055210006900174260007100243300001400314490000700328520128100335100001201616700002701628700002901655856013101684       2005                        eng d  a0888-588500aKinetic modeling of reductive alkylation of aniline with acetone using Pd/Al2O3 catalyst in a batch slurry reactor0 aKinetic modeling of reductive alkylation of aniline with acetone  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUL  a5388-53960 v443 a<p>The kinetics of reductive alkylation of aniline with acetone was studied in a slurry reactor under isothermal conditions in a temperature range of 378-408 K using 3% Pd/Al2O3 catalyst. Experimental data on concentration-time as well as hydrogen consumption-time profiles were obtained to study the effect of concentration of aniline, catalyst loading, and partial pressure of hydrogen. Separate controlled experiments were performed to understand the nature of the condensation reaction between aniline and acetone, which forms the Shiff's base intermediate. From the concentration-time profiles and the effect of reaction conditions, it was found that the noncatalytic equilibrium formation of the Shiff base intermediate was the slowest step in the multistep reaction sequence. Several rate equations were considered to fit the batch slurry reactor data, and rate models based on competitive dissociative adsorption of hydrogen and the reactive substrates in the rate-limiting catalytic steps were found to represent the experimental data. The kinetic parameters were evaluated by fitting the integral batch reactor data at different temperatures. The activation energies, heat of adsorption, and entropy of adsorption of all the reactant species were also evaluated.</p>1 aRoy, D.1 aJaganathan, Rengaswamy1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/kinetic-modeling-reductive-alkylation-aniline-acetone-using-pdal2o3-catalyst-batch-slurry-002292nas a2200253   4500008004100000022001400041245009200055210006900147260010600216300001400322490000700336520136000343653001901703653000801722653001301730653002601743653002501769100002401794700002301818700002201841700002701863700002901890856011901919       2007                        eng d  a0009-250900aModeling of bubble column slurry reactor for reductive alkylation of p-phenylenediamine0 aModeling of bubble column slurry reactor for reductive alkylatio  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcDEC  a7290-73040 v623 a<p>A bubble column slurry reactor (BCSR) model has been developed for the reductive alkylation of p-phenylenediamine (PPDA) with methyl ethyl ketone (MEK) to N, N'-di-secondary-alkyl-p-phenylenediamine (Di-amine). This particular reaction system is commercially relevant and involves a combination of parallel and consecutive reactions comprising equilibrium non-catalytic (homogeneous) and catalytic (heterogeneous) steps. The proposed model is based on the `mixing cell approach'. In this work the mixing cell approach has been extended by including a liquid backflow stream from all but the bottommost mixing cell. The model incorporates the contributions of gas-liquid and liquid-solid mass transfer, heat effects, and complex multistep reaction kinetics. CFD model is used to estimate the extent of backflow among mixing cells and its dependence on operating parameters. The effect of gas and liquid velocities, catalyst loading, inlet PPDA concentration, and temperature on the conversion, selectivity, global rate of hydrogenation, and temperature rise is discussed. The comparison of the current approach with the traditional mixing cell model is discussed. The BCSR model presented here will be useful to provide guidelines for designing and improving overall performance of bubble column reactors. (C) 2007 Elsevier Ltd. All rights reserved.</p>10abubble columns10aCFD10akinetics10aMathematical modeling10aReductive alkylation1 aChaudhari, Amit, S.1 aRampure, Mohan, R.1 aRanade, Vivek, V.1 aJaganathan, Rengaswamy1 aChaudhari, Raghunath, V.  uhttps://library.ncl.res.in/content/modeling-bubble-column-slurry-reactor-reductive-alkylation-p-phenylenediamine-002407nas a2200289   4500008004100000020002200041022001400063245010400077210006900181260019400250300001200444490000900456520127500465653002101740653003301761653002101794653001901815653001801834100002501852700002801877700001901905700002701924700001501951700001201966700001201978856012701990       2010                        eng d  a978-0-7354-0854-8  a0094-243X00aDynamic modeling of hydro- formylation of 1-decene on Rh/C catalyst in bubble colunm slurry reactor0 aDynamic modeling of hydro formylation of 1decene on RhC catalyst  a2 Huntington Quadrangle, STE 1NO1, Melville, NY 11747-4501 USAbNatl Inst Technol Durgapur; SERC, Dept Sci & Technol; Caledonian Coll Engn; BRNS, Dept Atom Energy; DRDO, Minist DefencecOCT  a143-1500 v12983 a<p>A dynamic model has been developed for the bubble column slurry reactor operating under non-isothermal conditions. The model consists of mass and heat balance equations for the gas and liquid phases and the catalyst particle. The model equations consisted of partial differential equations (PDE) which were converted to ordinary differential equations (ODE) by using finite difference relationships for the spatial derivatives and the ordinary differential equations for the time derivatives (Numerical Method of Lines-NMoL). The model was applied to describe the dynamic behaviour of bubble column slurry reactor during the hydroformylation of 1-decene on Rh/C catalyst. Model simulations were performed to obtain a meaningful path to steady state and to reproduce the other characteristics of the dynamic behaviour of the reactor. Under given conditions, the reaction required approximately 3750 seconds to reach the steady state concentrations at various reactor positions. It was observed with increase in the fluid velocities, the dynamics of the system was altered to 2500 seconds to reach the steady state condition. The effect of axial dispersion on the substrate concentration and the temperature rise along the reactor was further studied and discussed.</p>10aaxial dispersion10abubble column slurry reactor10aDynamic modeling10amethod of line10aPDE solutions1 aUpkare, Makarand, M.1 aRajurkar, Kalpendra, B.1 aDas, Samir, K.1 aJaganathan, Rengaswamy1 aParuya, S.1 aKar, S.1 aRoy, S.  uhttps://library.ncl.res.in/content/dynamic-modeling-hydro-formylation-1-decene-rhc-catalyst-bubble-colunm-slurry-reactor-000792nas a2200181   4500008004100000022001400041245012900055210006900184260007100253490000800324100002600332700002400358700002600382700002500408700002300433700002700456856012700483       2010                        eng d  a0065-772700aGlycerine to renewable amino alcohol: reaction mechanism and kinetics of the catalytic reductive amination of hydroxyacetone0 aGlycerine to renewable amino alcohol reaction mechanism and kine  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR0 v2391 aArredondo, Victor, M.1 aGibson, Michael, S.1 aFairweather, Neil, T.1 aDaniels, Angella, C.1 aKreuzer, David, P.1 aJaganathan, Rengaswamy  uhttps://library.ncl.res.in/content/glycerine-renewable-amino-alcohol-reaction-mechanism-and-kinetics-catalytic-reductive-001740nas a2200265   4500008004100000020002200041022001400063245011200077210006900189260019400258300001200452490000900464520062700473653002401100653002601124653005201150100002501202700002801227700002201255700002701277700001501304700001201319700001101331856013201342       2010                        eng d  a978-0-7354-0854-8  a0094-243X00aMathematical modeling and simulation of bubble column reactor for aerial liquid phase cyclohexane oxidation0 aMathematical modeling and simulation of bubble column reactor fo  a2 Huntington Quadrangle, STE 1no1, Melville, NY 11747-4501 USAbNatl Inst Technol Durgapur; SERC, Dept Sci & Technol; Caledonian Coll Engn; BRNS, Dept Atom Energy; DRDO, Minist DefencecOCT  a151-1590 v12983 a<p>Cyclohexane oxidation is an important but complex commercial reaction, wherein the desired product, K-A oil appears as an intermediates of the reaction sequence. A mathematical model has been developed for the bubble column reactor operating under isothermal conditions. The mass and energy model equations consisted of stiff ODEs. The model was applied to describe the behavior of bubble column reactor for aerial liquid phase cyclohexane oxidation. Effect of initial substrate concentration, catalyst loading and temperature was studied and discussed in detail. Conclusions were presented at the end of the study.</p>10aK-A Oil Selectivity10aMathematical modeling10asubstrate conversion and product yield analysis1 aUpkare, Makarand, M.1 aRajurkar, Kalpendra, B.1 aGupta, Pankaj, R.1 aJaganathan, Rengaswamy1 aParuya, S.1 aKar, S.1 aRoy, S  uhttps://library.ncl.res.in/content/mathematical-modeling-and-simulation-bubble-column-reactor-aerial-liquid-phase-cyclohexane-0