OPINION
for final qualifying work of Svyatkina (Kozhevnikova) Anna Antonovna
" Transport properties of proton-conducting membranes based on antimony salt".

The work of A. A. Svyatkina (nee Kozhevnikova) is devoted to the study of the movement of ions in the particles of the inorganic ion exchanger kremneftoristogo and composite materials (membranes) on the basis of this ion exchanger. This work is a new phase of research carried out at the Department of physical chemistry, Institute of Chemistry, St. Petersburg state University.
A. A. Svyatkina have done a lot of experimental and theoretical work. It examined the exchange of ions on kremneftoristym the ion exchanger in the hydrogen and potassium forms, produced several variants of membranes on the basis of this ion exchanger and organic polymer binder (F-26), examined the exchange of ions on the membranes and made a comparative description of the source of the resin and composite materials on its basis.
The student met with a large amount of literature data, conducted analysis and presented literature review.
During the work in the laboratory of Anna Antonovna showed himself a good, competent experimenter and a nice person.
Final qualifying work AA Svyatkina deserves the rating "EXCELLENT".

Reader of Saint-Petersburg University, Candidate of chemistry
Maria A. Siniakova