Influence of slow diffusing species on mixture diffusion of hexane isomers in silicalite: Characterization by a new cyclic method
Identifieur interne : 000896 ( Main/Curation ); précédent : 000895; suivant : 000897Influence of slow diffusing species on mixture diffusion of hexane isomers in silicalite: Characterization by a new cyclic method
Auteurs : Kader Lettat [France] ; Elsa Jolimaitre [France] ; Mélaz Tayakout [France] ; Daniel Tondeur [France]Source :
- AIChE Journal [ 0001-1541 ] ; 2012-05.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Chargement, Simulation.
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English descriptors
- KwdEn :
- Adsorbent, Adsorbent saturation loading, Adsorption, Adsorption step, Aiche, Aiche journal, Alkane, Alkane mixtures, American institute, Automatic valve, Axial dispersion, Binary exchange diffusion, Breakthrough, Breakthrough curve, Breakthrough curves, Chem, Classical breakthrough curves, Crystal radius, Cycle number, Cyclic, Cyclic breakthrough curves, Cyclic conditions, Cyclic experiment, Cyclic experiments, Delta loading, Delta loading ratio, Delta loadings, Desorbent, Desorption, Desorption step, Desorption step duration, Desorption steps, Desorption time, Desorption times, Different times, Diffusion, Diffusion model, Diffusivity, Energies nouvelles, Exchange isotherm, Experimental conditions, Experimental results, High desorption times, Imsl library, Isomer, Jolimaitre, Kinetic parameters, Kinetics, Krishna, Langmuir, Langmuir model, Langmuir parameters, Langmuir ratio, Last cycle, Liquid phase, Loading, Mass transfer, Mixture concentration, Modeling, Monobranched, Monobranched isomers, Other hand, Other species, Parameter, Parameter estimation, Parameters estimation, Pellet, Phase concentration, Phys chem, Previous article7, Same adsorption time, Saturation, Saturation concentration, Saturation loading, Selectivity, Silicalite, Simple breakthrough curves, Simulation, Single breakthrough curve, Slow accumulation, Steady state, Thermodynamic, Thermodynamic parameters, Time scale, Volume constraints, Whole cyclic experiment, Zeolite, Zeolite crystals, Zeolite pores.
- Teeft :
- Adsorbent, Adsorbent saturation loading, Adsorption, Adsorption step, Aiche, Aiche journal, Alkane, Alkane mixtures, American institute, Automatic valve, Axial dispersion, Binary exchange diffusion, Breakthrough, Breakthrough curve, Breakthrough curves, Chem, Classical breakthrough curves, Crystal radius, Cycle number, Cyclic, Cyclic breakthrough curves, Cyclic conditions, Cyclic experiment, Cyclic experiments, Delta loading, Delta loading ratio, Delta loadings, Desorbent, Desorption, Desorption step, Desorption step duration, Desorption steps, Desorption time, Desorption times, Different times, Diffusion model, Diffusivity, Energies nouvelles, Exchange isotherm, Experimental conditions, Experimental results, High desorption times, Imsl library, Isomer, Jolimaitre, Kinetic parameters, Krishna, Langmuir, Langmuir model, Langmuir parameters, Langmuir ratio, Last cycle, Liquid phase, Mass transfer, Mixture concentration, Monobranched, Monobranched isomers, Other hand, Other species, Parameter, Parameter estimation, Parameters estimation, Pellet, Phase concentration, Phys chem, Previous article7, Same adsorption time, Saturation concentration, Saturation loading, Selectivity, Silicalite, Simple breakthrough curves, Simulation, Single breakthrough curve, Slow accumulation, Thermodynamic, Thermodynamic parameters, Time scale, Volume constraints, Whole cyclic experiment, Zeolite, Zeolite crystals, Zeolite pores.
Abstract
The feasibility of mono‐ and di‐branched paraffins separation on silicalite was evaluated by performing cyclic breakthrough experiments in liquid phase with mixtures of 2‐methylpentane (2MP), 3‐methylpentane (3MP), 2,3‐dimethylbutane (23DMB), and 2,2‐dimethylbutane (22DMB). For mixtures of the faster diffusing species (2MP, 3MP, and 23DMB), cyclic steady state is obtained from the first cycle. On the other hand, when the slow diffusing species 22DMB is involved, a slow accumulation occurs from cycle to cycle, yielding a change of the breakthrough curves for all the species. Using a diffusion model especially adapted to adsorbent saturation loading, the kinetic and thermodynamic parameters of 22DMB were estimated. Influence of the cycling conditions on the separation performance were finally studied by simulation. © 2011 American Institute of Chemical Engineers AIChE J, 2012
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- https://hal.archives-ouvertes.fr/hal-00656385
DOI: 10.1002/aic.12679
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accumulation</term><term>Thermodynamic</term><term>Thermodynamic parameters</term><term>Time scale</term><term>Volume constraints</term><term>Whole cyclic experiment</term><term>Zeolite</term><term>Zeolite crystals</term><term>Zeolite pores</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Chargement</term><term>Simulation</term></keywords><keywords scheme="mix" xml:lang="fr"><term>adsorption</term><term>cyclic method</term><term>diffusion</term><term>liquid phase</term><term>mixtures</term><term>zeolites</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The feasibility of mono‐ and di‐branched paraffins separation on silicalite was evaluated by performing cyclic breakthrough experiments in liquid phase with mixtures of 2‐methylpentane (2MP), 3‐methylpentane (3MP), 2,3‐dimethylbutane (23DMB), and 2,2‐dimethylbutane (22DMB). For mixtures of the faster diffusing species (2MP, 3MP, and 23DMB), cyclic steady state is obtained from the first cycle. On the other hand, when the slow diffusing species 22DMB is involved, a slow accumulation occurs from cycle to cycle, yielding a change of the breakthrough curves for all the species. Using a diffusion model especially adapted to adsorbent saturation loading, the kinetic and thermodynamic parameters of 22DMB were estimated. Influence of the cycling conditions on the separation performance were finally studied by simulation. © 2011 American Institute of Chemical Engineers AIChE J, 2012</div></front></TEI><double idat="0001-1541:2012:Lettat K:influence:of:slow"><INIST><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Influence of Slow Diffusing Species on Mixture Diffusion of Hexane Isomers in Silicalite: Characterization by a New Cyclic Method</title><author><name sortKey="Lettat, Kader" sort="Lettat, Kader" uniqKey="Lettat K" first="Kader" last="Lettat">Kader Lettat</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IFP Energies nouvelles, Rond-point de I'échangeur de Solaize, Solaize 69360, France Laboratoire Reactions et Genie des Procédés, CNRS-Nancy-University, ENSIC, 1 rue Grandville</s1><s2>Nancy 54000</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName></affiliation></author><author><name sortKey="Jolimaitre, Elsa" sort="Jolimaitre, Elsa" uniqKey="Jolimaitre E" first="Elsa" last="Jolimaitre">Elsa Jolimaitre</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>IFP Energies nouvelles, Rond-point de 1'échangeur de Solaize</s1><s2>Solaize 69360</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tayakout, Melaz" sort="Tayakout, Melaz" uniqKey="Tayakout M" first="Mélaz" last="Tayakout">Mélaz Tayakout</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>IRCELYON, UMR 5256, CNRS/Université Lyon 1 2 Av. Albert Einstein</s1><s2>Villeurbanne 69626</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tondeur, Daniel" sort="Tondeur, Daniel" uniqKey="Tondeur D" first="Daniel" last="Tondeur">Daniel Tondeur</name><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>Laboratoire Reactions et Genie des Procédés, CNRS-Nancy-University, ENSIC, 1 rue Grandville</s1><s2>Nancy 54000</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">12-0202594</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0202594 INIST</idno><idno type="RBID">Pascal:12-0202594</idno><idno type="wicri:Area/PascalFrancis/Corpus">000141</idno><idno type="wicri:Area/PascalFrancis/Curation">000969</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000104</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000104</idno><idno type="wicri:doubleKey">0001-1541:2012:Lettat K:influence:of:slow</idno><idno type="wicri:Area/Main/Merge">000A31</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Influence of Slow Diffusing Species on Mixture Diffusion of Hexane Isomers in Silicalite: Characterization by a New Cyclic Method</title><author><name sortKey="Lettat, Kader" sort="Lettat, Kader" uniqKey="Lettat K" first="Kader" last="Lettat">Kader Lettat</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IFP Energies nouvelles, Rond-point de I'échangeur de Solaize, Solaize 69360, France Laboratoire Reactions et Genie des Procédés, CNRS-Nancy-University, ENSIC, 1 rue Grandville</s1><s2>Nancy 54000</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName></affiliation></author><author><name sortKey="Jolimaitre, Elsa" sort="Jolimaitre, Elsa" uniqKey="Jolimaitre E" first="Elsa" last="Jolimaitre">Elsa Jolimaitre</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>IFP Energies nouvelles, Rond-point de 1'échangeur de Solaize</s1><s2>Solaize 69360</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tayakout, Melaz" sort="Tayakout, Melaz" uniqKey="Tayakout M" first="Mélaz" last="Tayakout">Mélaz Tayakout</name><affiliation wicri:level="3"><inist:fA14 i1="03"><s1>IRCELYON, UMR 5256, CNRS/Université Lyon 1 2 Av. Albert Einstein</s1><s2>Villeurbanne 69626</s2><s3>FRA</s3><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tondeur, Daniel" sort="Tondeur, Daniel" uniqKey="Tondeur D" first="Daniel" last="Tondeur">Daniel Tondeur</name><affiliation wicri:level="3"><inist:fA14 i1="04"><s1>Laboratoire Reactions et Genie des Procédés, CNRS-Nancy-University, ENSIC, 1 rue Grandville</s1><s2>Nancy 54000</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></analytic><series><title level="j" type="main">AIChE journal</title><title level="j" type="abbreviated">AIChE j.</title><idno type="ISSN">0001-1541</idno><imprint><date when="2012">2012</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">AIChE journal</title><title level="j" type="abbreviated">AIChE j.</title><idno type="ISSN">0001-1541</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Breakthrough curve</term><term>Diffusion</term><term>Isomer</term><term>Kinetics</term><term>Liquid phase</term><term>Loading</term><term>Modeling</term><term>Saturation</term><term>Steady state</term><term>Zeolite</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Diffusion</term><term>Isomère</term><term>Phase liquide</term><term>Régime permanent</term><term>Courbe rupture</term><term>Modélisation</term><term>Saturation</term><term>Chargement</term><term>Cinétique</term><term>Adsorption</term><term>Zéolite</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Chargement</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The feasibility of mono- and di-branched paraffins separation on silicalite was evaluated by performing cyclic breakthrough experiments in liquid phase with mixtures of 2-methylpentane (2MP), 3-methylpentane (3MP), 2,3-dimethylbutane (23DMB), and 2,2-dimethylbutane (22DMB). For mixtures of the faster diffusing species (2MP, 3MP, and 23DMB), cyclic steady state is obtained from the first cycle. On the other hand, when the slow diffusing species 22DMB is involved, a slow accumulation occurs from cycle to cycle, yielding a change of the breakthrough curves for all the species. Using a diffusion model especially adapted to adsorbent saturation loading, the kinetic and thermodynamic parameters of 22DMB were estimated. Influence of the cycling conditions on the separation performance were finally studied by simulation.</div></front></TEI></INIST><ISTEX><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Influence of slow diffusing species on mixture diffusion of hexane isomers in silicalite: Characterization by a new cyclic method</title><author><name sortKey="Lettat, Kader" sort="Lettat, Kader" uniqKey="Lettat K" first="Kader" last="Lettat">Kader Lettat</name></author><author><name sortKey="Jolimaitre, Elsa" sort="Jolimaitre, Elsa" uniqKey="Jolimaitre E" first="Elsa" last="Jolimaitre">Elsa Jolimaitre</name></author><author><name sortKey="Tayakout, Melaz" sort="Tayakout, Melaz" uniqKey="Tayakout M" first="Mélaz" last="Tayakout">Mélaz Tayakout</name></author><author><name sortKey="Tondeur, Daniel" sort="Tondeur, Daniel" uniqKey="Tondeur D" first="Daniel" last="Tondeur">Daniel Tondeur</name><affiliation><country>France</country><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:AD08E7214B42A852A7D940E5C0D6A225C7ED9F1A</idno><date when="2012" year="2012">2012</date><idno type="doi">10.1002/aic.12679</idno><idno type="url">https://api.istex.fr/document/AD08E7214B42A852A7D940E5C0D6A225C7ED9F1A/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000B34</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000B34</idno><idno type="wicri:Area/Istex/Curation">000B34</idno><idno type="wicri:Area/Istex/Checkpoint">000042</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000042</idno><idno type="wicri:doubleKey">0001-1541:2012:Lettat K:influence:of:slow</idno><idno type="wicri:source">HAL</idno><idno type="RBID">Hal:hal-00656385</idno><idno type="url">https://hal.archives-ouvertes.fr/hal-00656385</idno><idno type="wicri:Area/Hal/Corpus">000621</idno><idno type="wicri:Area/Hal/Curation">000621</idno><idno type="wicri:Area/Hal/Checkpoint">000970</idno><idno type="wicri:explorRef" wicri:stream="Hal" wicri:step="Checkpoint">000970</idno><idno type="wicri:doubleKey">0001-1541:2011:Lettat K:influence:of:slow</idno><idno type="wicri:Area/Main/Merge">000974</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Influence of slow diffusing species on mixture diffusion of hexane isomers in silicalite: Characterization by a new cyclic method</title><author><name sortKey="Lettat, Kader" sort="Lettat, Kader" uniqKey="Lettat K" first="Kader" last="Lettat">Kader Lettat</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>IFP Energies nouvelles, Rond‐point de l'échangeur de Solaize, Solaize 69360</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Réactions et Génie des Procédés, CNRS‐Nancy‐University, ENSIC, 1 rue Grandville, Nancy F‐54000</wicri:regionArea><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName></affiliation></author><author><name sortKey="Jolimaitre, Elsa" sort="Jolimaitre, Elsa" uniqKey="Jolimaitre E" first="Elsa" last="Jolimaitre">Elsa Jolimaitre</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>IFP Energies nouvelles, Rond‐point de l'échangeur de Solaize, Solaize 69360</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Correspondence address: IFP Energies nouvelles, Rond‐point de l'échangeur de Solaize, Solaize 69360</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tayakout, Melaz" sort="Tayakout, Melaz" uniqKey="Tayakout M" first="Mélaz" last="Tayakout">Mélaz Tayakout</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>IRCELYON, UMR 5256, CNRS/Université Lyon 1 2 Av. Albert Einstein, Villeurbanne F‐69626</wicri:regionArea><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author><author><name sortKey="Tondeur, Daniel" sort="Tondeur, Daniel" uniqKey="Tondeur D" first="Daniel" last="Tondeur">Daniel Tondeur</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire Réactions et Génie des Procédés, CNRS‐Nancy‐University, ENSIC, 1 rue Grandville, Nancy F‐54000</wicri:regionArea><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">AIChE Journal</title><title level="j" type="alt">AICHE JOURNAL</title><idno type="ISSN">0001-1541</idno><idno type="eISSN">1547-5905</idno><imprint><biblScope unit="vol">58</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="1447">1447</biblScope><biblScope unit="page" to="1455">1455</biblScope><biblScope unit="page-count">9</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2012-05">2012-05</date></imprint><idno type="ISSN">0001-1541</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0001-1541</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorbent</term><term>Adsorbent saturation loading</term><term>Adsorption</term><term>Adsorption step</term><term>Aiche</term><term>Aiche journal</term><term>Alkane</term><term>Alkane mixtures</term><term>American institute</term><term>Automatic valve</term><term>Axial dispersion</term><term>Binary exchange diffusion</term><term>Breakthrough</term><term>Breakthrough curve</term><term>Breakthrough curves</term><term>Chem</term><term>Classical breakthrough curves</term><term>Crystal radius</term><term>Cycle number</term><term>Cyclic</term><term>Cyclic breakthrough curves</term><term>Cyclic conditions</term><term>Cyclic experiment</term><term>Cyclic experiments</term><term>Delta loading</term><term>Delta loading ratio</term><term>Delta loadings</term><term>Desorbent</term><term>Desorption</term><term>Desorption step</term><term>Desorption step duration</term><term>Desorption steps</term><term>Desorption time</term><term>Desorption times</term><term>Different times</term><term>Diffusion model</term><term>Diffusivity</term><term>Energies nouvelles</term><term>Exchange isotherm</term><term>Experimental conditions</term><term>Experimental results</term><term>High desorption times</term><term>Imsl library</term><term>Isomer</term><term>Jolimaitre</term><term>Kinetic parameters</term><term>Krishna</term><term>Langmuir</term><term>Langmuir model</term><term>Langmuir parameters</term><term>Langmuir ratio</term><term>Last cycle</term><term>Liquid phase</term><term>Mass transfer</term><term>Mixture concentration</term><term>Monobranched</term><term>Monobranched isomers</term><term>Other hand</term><term>Other species</term><term>Parameter</term><term>Parameter estimation</term><term>Parameters estimation</term><term>Pellet</term><term>Phase concentration</term><term>Phys chem</term><term>Previous article7</term><term>Same adsorption time</term><term>Saturation concentration</term><term>Saturation loading</term><term>Selectivity</term><term>Silicalite</term><term>Simple breakthrough curves</term><term>Simulation</term><term>Single breakthrough curve</term><term>Slow accumulation</term><term>Thermodynamic</term><term>Thermodynamic parameters</term><term>Time scale</term><term>Volume constraints</term><term>Whole cyclic experiment</term><term>Zeolite</term><term>Zeolite crystals</term><term>Zeolite pores</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Adsorbent</term><term>Adsorbent saturation loading</term><term>Adsorption</term><term>Adsorption step</term><term>Aiche</term><term>Aiche journal</term><term>Alkane</term><term>Alkane mixtures</term><term>American institute</term><term>Automatic valve</term><term>Axial dispersion</term><term>Binary exchange diffusion</term><term>Breakthrough</term><term>Breakthrough curve</term><term>Breakthrough curves</term><term>Chem</term><term>Classical breakthrough curves</term><term>Crystal radius</term><term>Cycle number</term><term>Cyclic</term><term>Cyclic breakthrough curves</term><term>Cyclic conditions</term><term>Cyclic experiment</term><term>Cyclic experiments</term><term>Delta loading</term><term>Delta loading ratio</term><term>Delta loadings</term><term>Desorbent</term><term>Desorption</term><term>Desorption step</term><term>Desorption step duration</term><term>Desorption steps</term><term>Desorption time</term><term>Desorption times</term><term>Different times</term><term>Diffusion model</term><term>Diffusivity</term><term>Energies nouvelles</term><term>Exchange isotherm</term><term>Experimental conditions</term><term>Experimental results</term><term>High desorption times</term><term>Imsl library</term><term>Isomer</term><term>Jolimaitre</term><term>Kinetic parameters</term><term>Krishna</term><term>Langmuir</term><term>Langmuir model</term><term>Langmuir parameters</term><term>Langmuir ratio</term><term>Last cycle</term><term>Liquid phase</term><term>Mass transfer</term><term>Mixture concentration</term><term>Monobranched</term><term>Monobranched isomers</term><term>Other hand</term><term>Other species</term><term>Parameter</term><term>Parameter estimation</term><term>Parameters estimation</term><term>Pellet</term><term>Phase concentration</term><term>Phys chem</term><term>Previous article7</term><term>Same adsorption time</term><term>Saturation concentration</term><term>Saturation loading</term><term>Selectivity</term><term>Silicalite</term><term>Simple breakthrough curves</term><term>Simulation</term><term>Single breakthrough curve</term><term>Slow accumulation</term><term>Thermodynamic</term><term>Thermodynamic parameters</term><term>Time scale</term><term>Volume constraints</term><term>Whole cyclic experiment</term><term>Zeolite</term><term>Zeolite crystals</term><term>Zeolite pores</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Simulation</term></keywords><keywords scheme="mix" xml:lang="fr"><term>adsorption</term><term>cyclic method</term><term>diffusion</term><term>liquid phase</term><term>mixtures</term><term>zeolites</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The feasibility of mono‐ and di‐branched paraffins separation on silicalite was evaluated by performing cyclic breakthrough experiments in liquid phase with mixtures of 2‐methylpentane (2MP), 3‐methylpentane (3MP), 2,3‐dimethylbutane (23DMB), and 2,2‐dimethylbutane (22DMB). For mixtures of the faster diffusing species (2MP, 3MP, and 23DMB), cyclic steady state is obtained from the first cycle. On the other hand, when the slow diffusing species 22DMB is involved, a slow accumulation occurs from cycle to cycle, yielding a change of the breakthrough curves for all the species. Using a diffusion model especially adapted to adsorbent saturation loading, the kinetic and thermodynamic parameters of 22DMB were estimated. Influence of the cycling conditions on the separation performance were finally studied by simulation. © 2011 American Institute of Chemical Engineers AIChE J, 2012</div></front></TEI></ISTEX></double></record>Pour manipuler ce document sous Unix (Dilib)
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