Kinetic study of ytterbium(III) extraction from sulfate medium with Cyanex 923
The kinetics of ytterbium(III) extraction from sulfate medium with Cyanex 923 in heptane has been investigated with a constant interfacial cell with laminar flow, which aimed to identify the extraction regime, reaction zone and rate equations. It was found that the extraction rate of ytterbium(III)...
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| Veröffentlicht in: | Journal of chemical technology and biotechnology (1986) 2007-08, Vol.82 (8), p.705-710 |
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| container_title | Journal of chemical technology and biotechnology (1986) |
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| creator | Wang, Weiwei Liu, Jianjun He, Wenwei Li, Deqian |
| description | The kinetics of ytterbium(III) extraction from sulfate medium with Cyanex 923 in heptane has been investigated with a constant interfacial cell with laminar flow, which aimed to identify the extraction regime, reaction zone and rate equations. It was found that the extraction rate of ytterbium(III) increased linearly with stirring speed and specific interfacial area. The activation energy Ea (9.56 kJ mol−1), activation enthalpy ΔH± (7.05 kJ mol−1), activation entropy ΔS±298 (−0.31 kJ mol−1) and Gibbs free energy of activation ΔG±298 (98.3 kJ mol−1) were calculated from the dependence of extraction rate on temperature. The experiential rate equations were obtained by investigating the influence of the concentration of various species on the extraction rate. A diffusion regime has been deduced from evidence of the linear dependence of extraction rate on stirring speed and the low value of the activation energy. The liquid–liquid interface is most probably the reaction zone in view of the linear dependence of extraction rate on specific interfacial area, the high interfacial activity and low water‐solubility of extractant. Thus the mass transfer rate is controlled by interfacial film diffusion of species. Copyright © 2007 Society of Chemical Industry |
| doi_str_mv | 10.1002/jctb.1712 |
| format | Article |
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It was found that the extraction rate of ytterbium(III) increased linearly with stirring speed and specific interfacial area. The activation energy Ea (9.56 kJ mol−1), activation enthalpy ΔH± (7.05 kJ mol−1), activation entropy ΔS±298 (−0.31 kJ mol−1) and Gibbs free energy of activation ΔG±298 (98.3 kJ mol−1) were calculated from the dependence of extraction rate on temperature. The experiential rate equations were obtained by investigating the influence of the concentration of various species on the extraction rate. A diffusion regime has been deduced from evidence of the linear dependence of extraction rate on stirring speed and the low value of the activation energy. The liquid–liquid interface is most probably the reaction zone in view of the linear dependence of extraction rate on specific interfacial area, the high interfacial activity and low water‐solubility of extractant. Thus the mass transfer rate is controlled by interfacial film diffusion of species. Copyright © 2007 Society of Chemical Industry</description><identifier>ISSN: 0268-2575</identifier><identifier>EISSN: 1097-4660</identifier><identifier>DOI: 10.1002/jctb.1712</identifier><identifier>CODEN: JCTBDC</identifier><language>eng</language><publisher>Chichester, UK: John Wiley & Sons, Ltd</publisher><subject>Applied sciences ; Chemical engineering ; constant interfacial cell ; Cyanex 923 ; diffusion ; Exact sciences and technology ; extraction ; Heat and mass transfer. Packings, plates ; kinetics ; ytterbium</subject><ispartof>Journal of chemical technology and biotechnology (1986), 2007-08, Vol.82 (8), p.705-710</ispartof><rights>Copyright © 2007 Society of Chemical Industry</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3142-73e62bcde208ab65af3edd08b37a1eca49cce41dd1cb832dd079a634a19230a03</citedby><cites>FETCH-LOGICAL-c3142-73e62bcde208ab65af3edd08b37a1eca49cce41dd1cb832dd079a634a19230a03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjctb.1712$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjctb.1712$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,781,785,1418,27929,27930,45579,45580</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18969340$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Weiwei</creatorcontrib><creatorcontrib>Liu, Jianjun</creatorcontrib><creatorcontrib>He, Wenwei</creatorcontrib><creatorcontrib>Li, Deqian</creatorcontrib><title>Kinetic study of ytterbium(III) extraction from sulfate medium with Cyanex 923</title><title>Journal of chemical technology and biotechnology (1986)</title><addtitle>J. Chem. Technol. Biotechnol</addtitle><description>The kinetics of ytterbium(III) extraction from sulfate medium with Cyanex 923 in heptane has been investigated with a constant interfacial cell with laminar flow, which aimed to identify the extraction regime, reaction zone and rate equations. It was found that the extraction rate of ytterbium(III) increased linearly with stirring speed and specific interfacial area. The activation energy Ea (9.56 kJ mol−1), activation enthalpy ΔH± (7.05 kJ mol−1), activation entropy ΔS±298 (−0.31 kJ mol−1) and Gibbs free energy of activation ΔG±298 (98.3 kJ mol−1) were calculated from the dependence of extraction rate on temperature. The experiential rate equations were obtained by investigating the influence of the concentration of various species on the extraction rate. A diffusion regime has been deduced from evidence of the linear dependence of extraction rate on stirring speed and the low value of the activation energy. The liquid–liquid interface is most probably the reaction zone in view of the linear dependence of extraction rate on specific interfacial area, the high interfacial activity and low water‐solubility of extractant. Thus the mass transfer rate is controlled by interfacial film diffusion of species. Copyright © 2007 Society of Chemical Industry</description><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>constant interfacial cell</subject><subject>Cyanex 923</subject><subject>diffusion</subject><subject>Exact sciences and technology</subject><subject>extraction</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>kinetics</subject><subject>ytterbium</subject><issn>0268-2575</issn><issn>1097-4660</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkDFv2zAQhYmiAeKmHfIPuKRIBjlHUiKlsTXS2GmQLK49EhR1QulIlktSiPXvK8NGOwUBDrjhvvfu4RFyyWDKAPjtxsZyyhTjH8iEQaGSVEr4SCbAZZ7wTGXn5FMIGwCQOZcT8vTTbTE6S0Psq4F2NR1iRF-6vr1eLBY3FPfRGxtdt6W171oa-qY2EWmL1cjQVxd_09lgtrinBRefyVltmoBfTvuC_Ppxt5zNk8fn-8Xs22NiBUt5ogRKXtoKOeSmlJmpBVYV5KVQhqE1aWEtpqyqmC1zwceTKowUqWHjDzAgLsjXo-_Od396DFG3LlhsmjFI1wctAAQf512QA1dK5tkI3hxB67sQPNZ6511r_KAZ6EO1-lCtPlQ7slcnUxOsaWpvttaF_4K8kIVIDylvj9yra3B421A_zJbfT87JUeFCxP0_hfEvWiqhMr1-uter5WrOWLHWIP4C-wmWrA</recordid><startdate>200708</startdate><enddate>200708</enddate><creator>Wang, Weiwei</creator><creator>Liu, Jianjun</creator><creator>He, Wenwei</creator><creator>Li, Deqian</creator><general>John Wiley & Sons, Ltd</general><general>Wiley</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7U5</scope><scope>F28</scope><scope>L7M</scope></search><sort><creationdate>200708</creationdate><title>Kinetic study of ytterbium(III) extraction from sulfate medium with Cyanex 923</title><author>Wang, Weiwei ; Liu, Jianjun ; He, Wenwei ; Li, Deqian</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3142-73e62bcde208ab65af3edd08b37a1eca49cce41dd1cb832dd079a634a19230a03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>constant interfacial cell</topic><topic>Cyanex 923</topic><topic>diffusion</topic><topic>Exact sciences and technology</topic><topic>extraction</topic><topic>Heat and mass transfer. Packings, plates</topic><topic>kinetics</topic><topic>ytterbium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Weiwei</creatorcontrib><creatorcontrib>Liu, Jianjun</creatorcontrib><creatorcontrib>He, Wenwei</creatorcontrib><creatorcontrib>Li, Deqian</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of chemical technology and biotechnology (1986)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Weiwei</au><au>Liu, Jianjun</au><au>He, Wenwei</au><au>Li, Deqian</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Kinetic study of ytterbium(III) extraction from sulfate medium with Cyanex 923</atitle><jtitle>Journal of chemical technology and biotechnology (1986)</jtitle><addtitle>J. Chem. Technol. Biotechnol</addtitle><date>2007-08</date><risdate>2007</risdate><volume>82</volume><issue>8</issue><spage>705</spage><epage>710</epage><pages>705-710</pages><issn>0268-2575</issn><eissn>1097-4660</eissn><coden>JCTBDC</coden><abstract>The kinetics of ytterbium(III) extraction from sulfate medium with Cyanex 923 in heptane has been investigated with a constant interfacial cell with laminar flow, which aimed to identify the extraction regime, reaction zone and rate equations. It was found that the extraction rate of ytterbium(III) increased linearly with stirring speed and specific interfacial area. The activation energy Ea (9.56 kJ mol−1), activation enthalpy ΔH± (7.05 kJ mol−1), activation entropy ΔS±298 (−0.31 kJ mol−1) and Gibbs free energy of activation ΔG±298 (98.3 kJ mol−1) were calculated from the dependence of extraction rate on temperature. The experiential rate equations were obtained by investigating the influence of the concentration of various species on the extraction rate. A diffusion regime has been deduced from evidence of the linear dependence of extraction rate on stirring speed and the low value of the activation energy. The liquid–liquid interface is most probably the reaction zone in view of the linear dependence of extraction rate on specific interfacial area, the high interfacial activity and low water‐solubility of extractant. Thus the mass transfer rate is controlled by interfacial film diffusion of species. Copyright © 2007 Society of Chemical Industry</abstract><cop>Chichester, UK</cop><pub>John Wiley & Sons, Ltd</pub><doi>10.1002/jctb.1712</doi><tpages>6</tpages></addata></record> |
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| ispartof | Journal of chemical technology and biotechnology (1986), 2007-08, Vol.82 (8), p.705-710 |
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| subjects | Applied sciences Chemical engineering constant interfacial cell Cyanex 923 diffusion Exact sciences and technology extraction Heat and mass transfer. Packings, plates kinetics ytterbium |
| title | Kinetic study of ytterbium(III) extraction from sulfate medium with Cyanex 923 |
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