Metal extractant, separation recovery method of metal ions using metal extractant, and compound

Abstract

Provided are a metal extractant and a compound that extract metal ions present in a water phase to an oil phase, in which the metal extractant and the compound have a structure represented by Formula (I) and do not include a nitrogen atom; and a separation recovery method of metal ions using the metal extractant.In Formula (I), R1 represents a hydrogen atom, a metal atom, or a monovalent substituent, X represents a monovalent substituent including at least one of an oxygen atom, a sulfur atom, or a phosphorus atom, and a benzene ring in the formula may form a fused ring.

What is claimed is: 
     
         1 . A metal extractant that extracts metal ions present in a water phase to an oil phase,
 wherein the metal extractant has a structure represented by Formula (I) and does not include a nitrogen atom,   
       
         
           
           
               
               
           
         
         in Formula (I), R 1  represents a hydrogen atom, a metal atom, or a monovalent substituent, 
         X represents a monovalent substituent including at least one of an oxygen atom, a sulfur atom, or a phosphorus atom, and 
         a benzene ring in Formula (I) may form a fused ring. 
       
     
     
         2 . The metal extractant according to  claim 1 ,
 wherein the metal extractant includes a functional group selected from the following group G of functional groups,   <Group G of Functional Groups>   a carboxy group, a phosphate group, a phosphonate group, a phosphinate group, a sulfonate group, and a sulfinate group.   
     
     
         3 . The metal extractant according to  claim 2 ,
 wherein the functional group selected from the group G of functional groups is a phosphate group or a phosphonate group.   
     
     
         4 . The metal extractant according to  claim 1 ,
 wherein the metal extractant has a hydrocarbon group having 9 or more carbon atoms.   
     
     
         5 . The metal extractant according to  claim 3 ,
 wherein the metal extractant has a hydrocarbon group having 9 or more carbon atoms.   
     
     
         6 . The metal extractant according to  claim 1 ,
 wherein the metal extractant is represented by Formula (II),   
       
         
           
           
               
               
           
         
         in Formula (II), R 1  represents a hydrogen atom, a metal atom, or a monovalent substituent, 
         L represents a divalent linking group including at least one of an oxygen atom, a sulfur atom, or a phosphorus atom and not including a nitrogen atom, 
         R 2  represents a hydrocarbon group having 8 or more carbon atoms, in which in a case where L represents a carbonyloxy group, R 2  represents a hydrogen atom or a hydrocarbon group having 8 or more carbon atoms, and 
         a benzene ring in Formula (II) may form a fused ring. 
       
     
     
         7 . The metal extractant according to  claim 1 ,
 wherein the metal ions are ions of a metal element belonging to Group 1 to Group 14 in a periodic table.   
     
     
         8 . The metal extractant according to  claim 1 ,
 wherein the metal extractant is used for extraction and separation of two or more kinds of metal ions belonging to different groups in a periodic table among the metal ions.   
     
     
         9 . The metal extractant according to  claim 6 ,
 wherein the metal extractant is used for extraction and separation of two or more kinds of metal ions belonging to different groups in a periodic table among the metal ions.   
     
     
         10 . A separation recovery method of metal ions, the separation recovery method comprising:
 mixing a water phase including plural kinds of metal ions with an oil phase including the metal extractant according to  claim 1 .   
     
     
         11 . A compound represented by Formula (II), 
       
         
           
           
               
               
           
         
         in Formula (II), R 1  represents a hydrogen atom, a metal atom, or a monovalent substituent, 
         L represents a divalent linking group including at least one of an oxygen atom, a sulfur atom, or a phosphorus atom and not including a nitrogen atom, 
         R 2  represents a hydrocarbon group having 8 or more carbon atoms, in which in a case where L represents a carbonyloxy group, R 2  represents a hydrogen atom or a hydrocarbon group having 8 or more carbon atoms, and 
         a benzene ring in Formula (II) may form a fused ring.