<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Chaudhari, Amit S.</style></author><author><style face="normal" font="default" size="100%">Rampure, Mohan R.</style></author><author><style face="normal" font="default" size="100%">Ranade, Vivek V.</style></author><author><style face="normal" font="default" size="100%">Jaganathan, Rengaswamy</style></author><author><style face="normal" font="default" size="100%">Chaudhari, Raghunath V.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Modeling of bubble column slurry reactor for reductive alkylation of p-phenylenediamine</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Engineering Science</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">bubble columns</style></keyword><keyword><style  face="normal" font="default" size="100%">CFD</style></keyword><keyword><style  face="normal" font="default" size="100%">kinetics</style></keyword><keyword><style  face="normal" font="default" size="100%">Mathematical modeling</style></keyword><keyword><style  face="normal" font="default" size="100%">Reductive alkylation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2007</style></year><pub-dates><date><style  face="normal" font="default" size="100%">DEC</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">24, SI</style></number><publisher><style face="normal" font="default" size="100%">PERGAMON-ELSEVIER SCIENCE LTD</style></publisher><pub-location><style face="normal" font="default" size="100%">THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND</style></pub-location><volume><style face="normal" font="default" size="100%">62</style></volume><pages><style face="normal" font="default" size="100%">7290-7304</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;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.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">24</style></issue><work-type><style face="normal" font="default" size="100%">Article</style></work-type><notes><style face="normal" font="default" size="100%">8th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering, Indian Inst Technol Delhi, New Delhi, INDIA, DEC 16-19, 2007</style></notes><custom3><style face="normal" font="default" size="100%">&lt;p&gt;Foreign&lt;/p&gt;</style></custom3><custom4><style face="normal" font="default" size="100%">2.75</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Upkare, Makarand M.</style></author><author><style face="normal" font="default" size="100%">Rajurkar, Kalpendra B.</style></author><author><style face="normal" font="default" size="100%">Gupta, Pankaj R.</style></author><author><style face="normal" font="default" size="100%">Jaganathan, Rengaswamy</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">Paruya, S.</style></author><author><style face="normal" font="default" size="100%">Kar, S.</style></author><author><style face="normal" font="default" size="100%">Roy, S</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Mathematical modeling and simulation of bubble column reactor for aerial liquid phase cyclohexane oxidation</style></title><secondary-title><style face="normal" font="default" size="100%">International Conference on Modeling, Optimization, and Computing</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">AIP Conference Proceedings</style></tertiary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">K-A Oil Selectivity</style></keyword><keyword><style  face="normal" font="default" size="100%">Mathematical modeling</style></keyword><keyword><style  face="normal" font="default" size="100%">substrate conversion and product yield analysis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">OCT</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Natl Inst Technol Durgapur; SERC, Dept Sci &amp; Technol; Caledonian Coll Engn; BRNS, Dept Atom Energy; DRDO, Minist Defence</style></publisher><pub-location><style face="normal" font="default" size="100%">2 Huntington Quadrangle, STE 1no1, Melville, NY 11747-4501 USA</style></pub-location><volume><style face="normal" font="default" size="100%">1298</style></volume><pages><style face="normal" font="default" size="100%">151-159</style></pages><isbn><style face="normal" font="default" size="100%">978-0-7354-0854-8</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;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.&lt;/p&gt;</style></abstract><notes><style face="normal" font="default" size="100%">International Conference on Modeling, Optimization, and Computing, Durgapur, INDIA, OCT 28-30, 2010</style></notes></record></records></xml>