Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide.
The solid-state chelation of transition metal ions (Co(2+), Ni(2+), and Cu(2+)) from aqueous solutions into the lithium aluminum layered double hydroxide ([LiAl(2)(OH)(6)]Cl x 0.5H(2)O or LDH) which has been pre-intercalated with EDTA (ethylenediaminetetraacetate) ligand has been investigated. The i...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2003
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| _version_ | 1826258502098616320 |
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| author | Tarasov, K O'Hare, D Isupov, V |
| author_facet | Tarasov, K O'Hare, D Isupov, V |
| author_sort | Tarasov, K |
| collection | OXFORD |
| description | The solid-state chelation of transition metal ions (Co(2+), Ni(2+), and Cu(2+)) from aqueous solutions into the lithium aluminum layered double hydroxide ([LiAl(2)(OH)(6)]Cl x 0.5H(2)O or LDH) which has been pre-intercalated with EDTA (ethylenediaminetetraacetate) ligand has been investigated. The intercalated metal cations form [M(edta)](2)(-) complexes between the LDH layers as indicated by elemental analysis, powder X-ray diffraction, and IR and UV-vis spectroscopies. If metal chloride or nitrate salts are used in the reaction with the LDH then co-intercalation of either the Cl(-) or NO(3)(-) anions is observed. In the case of metal acetate salts the cations intercalate without the accompanying anion. This can be explained by the different intercalation selectivity of the anions in relation to the LDH. In the latter case the introduction of the positive charge into LDH structure was compensated for by the release from the solid of the equivalent quantity of lithium and hydrogen cations. Time-resolved in-situ X-ray diffraction measurements have revealed that the chelation/intercalation reactions proceed very quickly. The rate of the reaction found for nickel acetate depends on concentration as approximately k[Ni(Ac)(2)](3). |
| first_indexed | 2024-03-06T18:34:58Z |
| format | Journal article |
| id | oxford-uuid:0aea2ea2-c64b-419f-bcb7-c9fb3c8f6d1b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:34:58Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | oxford-uuid:0aea2ea2-c64b-419f-bcb7-c9fb3c8f6d1b2022-03-26T09:26:34ZSolid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0aea2ea2-c64b-419f-bcb7-c9fb3c8f6d1bEnglishSymplectic Elements at Oxford2003Tarasov, KO'Hare, DIsupov, VThe solid-state chelation of transition metal ions (Co(2+), Ni(2+), and Cu(2+)) from aqueous solutions into the lithium aluminum layered double hydroxide ([LiAl(2)(OH)(6)]Cl x 0.5H(2)O or LDH) which has been pre-intercalated with EDTA (ethylenediaminetetraacetate) ligand has been investigated. The intercalated metal cations form [M(edta)](2)(-) complexes between the LDH layers as indicated by elemental analysis, powder X-ray diffraction, and IR and UV-vis spectroscopies. If metal chloride or nitrate salts are used in the reaction with the LDH then co-intercalation of either the Cl(-) or NO(3)(-) anions is observed. In the case of metal acetate salts the cations intercalate without the accompanying anion. This can be explained by the different intercalation selectivity of the anions in relation to the LDH. In the latter case the introduction of the positive charge into LDH structure was compensated for by the release from the solid of the equivalent quantity of lithium and hydrogen cations. Time-resolved in-situ X-ray diffraction measurements have revealed that the chelation/intercalation reactions proceed very quickly. The rate of the reaction found for nickel acetate depends on concentration as approximately k[Ni(Ac)(2)](3). |
| spellingShingle | Tarasov, K O'Hare, D Isupov, V Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title | Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title_full | Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title_fullStr | Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title_full_unstemmed | Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title_short | Solid-state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide. |
| title_sort | solid state chelation of metal ions by ethylenediaminetetraacetate intercalated in a layered double hydroxide |
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