Investigation of aggregation in solvent extraction of lanthanides by acidic extractants (organo-phosphorus and naphthenic acid)
Three acidic extractants (Ⅰ) di(2-ethylhexyl) phosphoric acid (HDEHP),(Ⅱ) 2-ethylhexyl phos-phonic acid mono-2-ethylhexyl ester (KEHPEHE) and (Ⅲ) naphthenic acid were employed in preparing the samples for the characterization of the coordination structure of lanthanlde-extractant complexes and the p...
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| Veröffentlicht in: | Science China. Chemistry 1997-02, Vol.40 (1), p.61-71 |
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| creator | 周乃扶 吴瑾光 俞致健 王笃金 徐光宪 |
| description | Three acidic extractants (Ⅰ) di(2-ethylhexyl) phosphoric acid (HDEHP),(Ⅱ) 2-ethylhexyl phos-phonic acid mono-2-ethylhexyl ester (KEHPEHE) and (Ⅲ) naphthenic acid were employed in preparing the samples for the characterization of the coordination structure of lanthanlde-extractant complexes and the physicochemical nature of aggregates formed in the organic diluent of the solvent extraction systems.Photo correlation spectroscopy (PCS) re-suits on the aggregates formed by the partially saponified HDEHP in n -heptane showed that the hydrodynamic radius of the aggregates was comparable to the molecular dimensions of HDEHP.The addition of 2-octanol into the diluent,by which the mixed solvent was formed,increased the dimensions of the corresponding aggregates.Aggregates formed from the ianthamde ions and HDEHP in the organic phase of the extraction systems were found very unstable.In the case of naphthenic acid,PCS data showed the formation of w/o microemulsion from the saponified naphthenic acid in the mix |
| doi_str_mv | 10.1007/BF02882189 |
| format | Article |
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Chemistry</title><addtitle>SCIENCE CHINA Chemistry</addtitle><description>Three acidic extractants (Ⅰ) di(2-ethylhexyl) phosphoric acid (HDEHP),(Ⅱ) 2-ethylhexyl phos-phonic acid mono-2-ethylhexyl ester (KEHPEHE) and (Ⅲ) naphthenic acid were employed in preparing the samples for the characterization of the coordination structure of lanthanlde-extractant complexes and the physicochemical nature of aggregates formed in the organic diluent of the solvent extraction systems.Photo correlation spectroscopy (PCS) re-suits on the aggregates formed by the partially saponified HDEHP in n -heptane showed that the hydrodynamic radius of the aggregates was comparable to the molecular dimensions of HDEHP.The addition of 2-octanol into the diluent,by which the mixed solvent was formed,increased the dimensions of the corresponding aggregates.Aggregates formed from the ianthamde ions and HDEHP in the organic phase of the extraction systems were found very unstable.In the case of naphthenic acid,PCS data showed the formation of w/o microemulsion from the saponified naphthenic acid in the mix</description><subject>acidic</subject><subject>Acids</subject><subject>aggregate</subject><subject>Aggregates</subject><subject>complex</subject><subject>Diethylhexylphosphoric acid</subject><subject>extractant</subject><subject>extracted</subject><subject>Heptanes</subject><subject>lanthanide</subject><subject>Lanthanides</subject><subject>Microemulsions</subject><subject>Naphthenic acids</subject><subject>Octanol</subject><subject>Phosphonic acids</subject><subject>Solvent extraction</subject><subject>Solvent extraction 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徐光宪</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c285t-3f691346975c052a04566140ce467169a2e79a29475e64c2105f1e08d4d1d16a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>acidic</topic><topic>Acids</topic><topic>aggregate</topic><topic>Aggregates</topic><topic>complex</topic><topic>Diethylhexylphosphoric acid</topic><topic>extractant</topic><topic>extracted</topic><topic>Heptanes</topic><topic>lanthanide</topic><topic>Lanthanides</topic><topic>Microemulsions</topic><topic>Naphthenic acids</topic><topic>Octanol</topic><topic>Phosphonic acids</topic><topic>Solvent extraction</topic><topic>Solvent extraction processes</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>周乃扶 吴瑾光 俞致健 王笃金 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Chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>周乃扶 吴瑾光 俞致健 王笃金 徐光宪</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of aggregation in solvent extraction of lanthanides by acidic extractants (organo-phosphorus and naphthenic acid)</atitle><jtitle>Science China. Chemistry</jtitle><addtitle>SCIENCE CHINA Chemistry</addtitle><date>1997-02-01</date><risdate>1997</risdate><volume>40</volume><issue>1</issue><spage>61</spage><epage>71</epage><pages>61-71</pages><issn>1674-7291</issn><issn>1006-9291</issn><eissn>1869-1870</eissn><eissn>1862-2771</eissn><abstract>Three acidic extractants (Ⅰ) di(2-ethylhexyl) phosphoric acid (HDEHP),(Ⅱ) 2-ethylhexyl phos-phonic acid mono-2-ethylhexyl ester (KEHPEHE) and (Ⅲ) naphthenic acid were employed in preparing the samples for the characterization of the coordination structure of lanthanlde-extractant complexes and the physicochemical nature of aggregates formed in the organic diluent of the solvent extraction systems.Photo correlation spectroscopy (PCS) re-suits on the aggregates formed by the partially saponified HDEHP in n -heptane showed that the hydrodynamic radius of the aggregates was comparable to the molecular dimensions of HDEHP.The addition of 2-octanol into the diluent,by which the mixed solvent was formed,increased the dimensions of the corresponding aggregates.Aggregates formed from the ianthamde ions and HDEHP in the organic phase of the extraction systems were found very unstable.In the case of naphthenic acid,PCS data showed the formation of w/o microemulsion from the saponified naphthenic acid in the mix</abstract><cop>Heidelberg</cop><pub>Springer Nature B.V</pub><doi>10.1007/BF02882189</doi><tpages>11</tpages></addata></record> |
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| subjects | acidic Acids aggregate Aggregates complex Diethylhexylphosphoric acid extractant extracted Heptanes lanthanide Lanthanides Microemulsions Naphthenic acids Octanol Phosphonic acids Solvent extraction Solvent extraction processes |
| title | Investigation of aggregation in solvent extraction of lanthanides by acidic extractants (organo-phosphorus and naphthenic acid) |
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