PRODUCTION OF IRON ORTHOPHOSPHATE
A process for the production of iron (III) orthophosphate of the general formula FePO4×nH2O (n 2.5) comprising: a) producing an aqueous solution containing Fe2+ ions by introducing, iron (II), iron (III) or mixed iron (II, III) compounds selected from hydroxides, oxides, oxide hydroxides, oxide hydr...
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| creator | SCHWARZ KILIAN BUEHLER GUNNAR |
| description | A process for the production of iron (III) orthophosphate of the general formula FePO4×nH2O (n 2.5) comprising: a) producing an aqueous solution containing Fe2+ ions by introducing, iron (II), iron (III) or mixed iron (II, III) compounds selected from hydroxides, oxides, oxide hydroxides, oxide hydrates, carbonates and hydroxide carbonates, together with elementary iron, into a phosphoric acid-bearing aqueous medium, to dissolve Fe2+ ions and to react Fe3+ with elementary Fe in a comproportionation reaction to give Fe2+; b) separating solids from the phosphoric-acid aqueous Fe2+ solution, and c) adding an oxidation agent to the phosphoric-acid aqueous Fe2+ solution to oxidize iron (II) in the solution to precipitate iron (III) orthophosphate of the general formula FePO4×nH2O. The invention includes the product of the process and its use to make LiFePO4 for batteries. |
| format | Patent |
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The invention includes the product of the process and its use to make LiFePO4 for batteries.</description><language>eng</language><subject>CHEMISTRY ; COMPOUNDS THEREOF ; INORGANIC CHEMISTRY ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES ; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES ; METALLURGY ; NANOTECHNOLOGY ; NON-METALLIC ELEMENTS ; PERFORMING OPERATIONS ; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES ; TRANSPORTING</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120216&DB=EPODOC&CC=US&NR=2012039783A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120216&DB=EPODOC&CC=US&NR=2012039783A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHWARZ KILIAN</creatorcontrib><creatorcontrib>BUEHLER GUNNAR</creatorcontrib><title>PRODUCTION OF IRON ORTHOPHOSPHATE</title><description>A process for the production of iron (III) orthophosphate of the general formula FePO4×nH2O (n 2.5) comprising: a) producing an aqueous solution containing Fe2+ ions by introducing, iron (II), iron (III) or mixed iron (II, III) compounds selected from hydroxides, oxides, oxide hydroxides, oxide hydrates, carbonates and hydroxide carbonates, together with elementary iron, into a phosphoric acid-bearing aqueous medium, to dissolve Fe2+ ions and to react Fe3+ with elementary Fe in a comproportionation reaction to give Fe2+; b) separating solids from the phosphoric-acid aqueous Fe2+ solution, and c) adding an oxidation agent to the phosphoric-acid aqueous Fe2+ solution to oxidize iron (II) in the solution to precipitate iron (III) orthophosphate of the general formula FePO4×nH2O. The invention includes the product of the process and its use to make LiFePO4 for batteries.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS THEREOF</subject><subject>INORGANIC CHEMISTRY</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</subject><subject>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</subject><subject>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</subject><subject>METALLURGY</subject><subject>NANOTECHNOLOGY</subject><subject>NON-METALLIC ELEMENTS</subject><subject>PERFORMING OPERATIONS</subject><subject>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAMCPJ3CXUO8fT3U_B3U_AMAtFBIR7-AR7-wQEejiGuPAysaYk5xam8UJqbQdnNNcTZQze1ID8-tbggMTk1L7UkPjTYyMDQyMDY0tzC2NHQmDhVAMA6I24</recordid><startdate>20120216</startdate><enddate>20120216</enddate><creator>SCHWARZ KILIAN</creator><creator>BUEHLER GUNNAR</creator><scope>EVB</scope></search><sort><creationdate>20120216</creationdate><title>PRODUCTION OF IRON ORTHOPHOSPHATE</title><author>SCHWARZ KILIAN ; BUEHLER GUNNAR</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2012039783A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2012</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS THEREOF</topic><topic>INORGANIC CHEMISTRY</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</topic><topic>MANUFACTURE OR TREATMENT OF NANOSTRUCTURES</topic><topic>MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES</topic><topic>METALLURGY</topic><topic>NANOTECHNOLOGY</topic><topic>NON-METALLIC ELEMENTS</topic><topic>PERFORMING OPERATIONS</topic><topic>SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>SCHWARZ KILIAN</creatorcontrib><creatorcontrib>BUEHLER GUNNAR</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SCHWARZ KILIAN</au><au>BUEHLER GUNNAR</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>PRODUCTION OF IRON ORTHOPHOSPHATE</title><date>2012-02-16</date><risdate>2012</risdate><abstract>A process for the production of iron (III) orthophosphate of the general formula FePO4×nH2O (n 2.5) comprising: a) producing an aqueous solution containing Fe2+ ions by introducing, iron (II), iron (III) or mixed iron (II, III) compounds selected from hydroxides, oxides, oxide hydroxides, oxide hydrates, carbonates and hydroxide carbonates, together with elementary iron, into a phosphoric acid-bearing aqueous medium, to dissolve Fe2+ ions and to react Fe3+ with elementary Fe in a comproportionation reaction to give Fe2+; b) separating solids from the phosphoric-acid aqueous Fe2+ solution, and c) adding an oxidation agent to the phosphoric-acid aqueous Fe2+ solution to oxidize iron (II) in the solution to precipitate iron (III) orthophosphate of the general formula FePO4×nH2O. The invention includes the product of the process and its use to make LiFePO4 for batteries.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MANUFACTURE OR TREATMENT OF NANOSTRUCTURES MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES METALLURGY NANOTECHNOLOGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES TRANSPORTING |
| title | PRODUCTION OF IRON ORTHOPHOSPHATE |
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