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The phase transfer mechanism of 18‐molybdophosphate anion at the water/nitrobenzene interface
Author(s) -
Wang Er Kang,
Liu YuQing
Publication year - 1989
Publication title -
acta chimica sinica english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 0256-7660
DOI - 10.1002/cjoc.19890070204
Subject(s) - chemistry , nitrobenzene , ion , cyclic voltammetry , aqueous solution , aqueous two phase system , phase (matter) , diffusion , polarization (electrochemistry) , inorganic chemistry , analytical chemistry (journal) , electrochemistry , chromatography , electrode , thermodynamics , catalysis , organic chemistry , physics
The phase transfer mechanism of 18‐molybdophosphate anion at the water/nitrobenzene interface has been investigated by chronopotentiometry with cyclic linear current‐scanning (CLC) and cyclic voltammetry (CV). The transfer species is 18‐molybdophosphtae anion with a charge number of 4, H 2 [P 2 Mo 18 O 62 ] 4‐ . The transfer process is controlled by diffusion at a slow polarization rate and considerably influenced by pH of the aqueous phase. The stable forms and pH range of the heteropoly anion in the aqueous solution can be directly confirmed through voltammetric behavior. The theoretical analysis of the relationship between the transfer potential and solution pH is identical to the experimental results. The linear concentration relationship with the transfer peak current is suggested to be used in the determination of heteropoly acids (salts).