In situ Kinetics Studies of Zn–Al LDH Intercalation with Corrosion Related Species Full article
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PCCP: Physical Chemistry Chemical Physics
ISSN: 1463-9076 , E-ISSN: 1463-9084 |
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Output data | Year: 2020, Volume: 22, Number: 31, Pages: 17574-17586 Pages count : 13 DOI: 10.1039/d0cp01765e | ||||||||
Tags | Aluminum alloys; Aluminum corrosion; Crystallization; Negative ions; Nitrates; Nucleation | ||||||||
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Abstract:
Kinetic parameters for three anion exchange reactions – Zn-LDH-NO3 → Zn-LDH-Cl, Zn-LDH-NO3 → Zn-LDH-SO4 and Zn-LDH-NO3 → Zn-LDH-VOx – were obtained by in situ synchrotron study. The first and the second ones are two-stage reactions; the first stage is characterized by the two-dimensional diffusion-controlled reaction following deceleratory nucleation and the second stage is a one-dimensional diffusion-controlled reaction also with a decelerator nucleation effect. In the case of exchange NO3− → Cl− host anions are completely released, while in the case of NO3− → SO42− the reaction ends without complete release of nitrate anions. The exchange of Zn-LDH-NO3 → Zn-LDH-VOx is a one-stage reaction and goes much slower than the previous two cases. The latter is characterized by a one stage two-dimensional reaction with an instantaneous nucleation. As a result, at the end of this process there are two crystalline phases with different polyvanadate species, presumably V4O124− and V2O74−, nitrate anions were not completely released. The rate of replacing NO3− anions by guest ones can be represented as Cl− > SO42− > VOxy−.
Cite:
Iuzviuk M.H.
, Bouali A.C.
, Serdechnova M.
, Yasakau K.A.
, Wieland D.C.F.
, Dovzhenko G.
, Mikhailau A.
, Blawert C.
, Zobkalo I.A.
, Ferreira M.G.S.
, Zheludkevich M.L.
In situ Kinetics Studies of Zn–Al LDH Intercalation with Corrosion Related Species
PCCP: Physical Chemistry Chemical Physics. 2020. V.22. N31. P.17574-17586. DOI: 10.1039/d0cp01765e WOS Scopus ANCAN PMID OpenAlex
In situ Kinetics Studies of Zn–Al LDH Intercalation with Corrosion Related Species
PCCP: Physical Chemistry Chemical Physics. 2020. V.22. N31. P.17574-17586. DOI: 10.1039/d0cp01765e WOS Scopus ANCAN PMID OpenAlex
Dates:
Submitted: | Apr 1, 2020 |
Accepted: | Jul 15, 2020 |
Published online: | Jul 20, 2020 |
Published print: | Aug 21, 2020 |
Identifiers:
Web of science: | WOS:000560847500011 |
Scopus: | 2-s2.0-85089712459 |
Chemical Abstracts: | 2020:1408809 |
Chemical Abstracts (print): | 174:118433 |
PMID: | 32716424 |
OpenAlex: | W3043476991 |