Abstract
A study is performed of the interaction between 2(4)-aminopyridines (2(4)-AP) and Pd(II), Pt(II), Pt(IV) and accompanying ions Ni(II), Co(II), Fe(II, III), Cu(II) in aqueous solutions close to the conditions of their extraction isolation and separation. It is shown that platinum metal ions form stable neutral and cationic complexes with both 2-AP and 4-AP that can be isolated from aqueous solutions. The tendency to form cationic complexes diminishes in the order Pd(II) Pt(II) Pt(IV) and 4-AP 2-AP. With the exception of Cu(II), ions of 3d-elements do not form stable complexes under these conditions. Cu(II) forms complexes with 2(4)-AP that are subject to hydrolysis when isolated from aqueous solutions. Features of 2(4)-AP when interacting with metal ions are discussed. It is proposed that analogs of 2(4)-AP with long hydrocarbon radicals be used for the extraction concentration of platinum metals from hydrometallurgical solutions of complex composition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
