KINETICS AND MECHANISM OF A SELF- OSCILATION REACTION OF KEPLERATE-TYPE POLYOXOMOLIBDATE DEGRADATION IN AN AQUEOUS SOLUTION

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KINETICS AND MECHANISM OF A SELF- OSCILATION REACTION OF KEPLERATE-TYPE POLYOXOMOLIBDATE DEGRADATION IN AN AQUEOUS SOLUTION. / Tereshchenko, K. A.; Shiyan, D. A.; Grzhegorzhevskii, K. V. et al.
In: Journal of Structural Chemistry, Vol. 63, No. 12, 01.12.2022, p. 2004-2019.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{93c9f081d55749349d26e060ab774b8e,

title = "KINETICS AND MECHANISM OF A SELF- OSCILATION REACTION OF KEPLERATE-TYPE POLYOXOMOLIBDATE DEGRADATION IN AN AQUEOUS SOLUTION",

abstract = "Mechanism of the (Formula presented.)(~300H2O)·(~10CH3 COONH4) polyoxomolybdate degradation in an aqueous solution is proposed and substantiated for the time using kinetic modeling. The mechanism includes four stages: I) non-catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; II) recovery of the bonds between the polyoxomolybdate fragments; III) catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; IV) increase of O2 concentration due to the decay of the conjugate pair (Formula presented.) releasing the oxygen molecule and due to O2 diffusion from the gas phase into the polyoxomolybdate aqueous solution. A kinetic model of the considered process is proposed. It is shown that bond recovery prevails over bond cleavage in the polyoxomolybdate due to low residual O2 concentration in the solution. At the same time, increasing the O2 concentration in the solution up to some “critical” value restarts the avalanche-like autocatalytic process of Mo–O bond cleavage in the polyoxomolybdate.",

author = "Tereshchenko, {K. A.} and Shiyan, {D. A.} and Grzhegorzhevskii, {K. V.} and Lyulinskaya, {Ya. L.} and Okhotnikov, {G. O.} and Ulitin, {N. V.} and Khursan, {S. L.} and Abramov, {P. A.}",

note = "This work was funded by the Tatarstan Academy of Sciences (contract No. 05-47- yuG of 28.04.2022).",

year = "2022",

month = dec,

day = "1",

doi = "10.1134/S0022476622120125",

language = "English",

volume = "63",

pages = "2004--2019",

journal = "Journal of Structural Chemistry",

issn = "0022-4766",

publisher = "Pleiades Publishing",

number = "12",

}

RIS

TY - JOUR

T1 - KINETICS AND MECHANISM OF A SELF- OSCILATION REACTION OF KEPLERATE-TYPE POLYOXOMOLIBDATE DEGRADATION IN AN AQUEOUS SOLUTION

AU - Tereshchenko, K. A.

AU - Shiyan, D. A.

AU - Grzhegorzhevskii, K. V.

AU - Lyulinskaya, Ya. L.

AU - Okhotnikov, G. O.

AU - Ulitin, N. V.

AU - Khursan, S. L.

AU - Abramov, P. A.

N1 - This work was funded by the Tatarstan Academy of Sciences (contract No. 05-47- yuG of 28.04.2022).

PY - 2022/12/1

Y1 - 2022/12/1

N2 - Mechanism of the (Formula presented.)(~300H2O)·(~10CH3 COONH4) polyoxomolybdate degradation in an aqueous solution is proposed and substantiated for the time using kinetic modeling. The mechanism includes four stages: I) non-catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; II) recovery of the bonds between the polyoxomolybdate fragments; III) catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; IV) increase of O2 concentration due to the decay of the conjugate pair (Formula presented.) releasing the oxygen molecule and due to O2 diffusion from the gas phase into the polyoxomolybdate aqueous solution. A kinetic model of the considered process is proposed. It is shown that bond recovery prevails over bond cleavage in the polyoxomolybdate due to low residual O2 concentration in the solution. At the same time, increasing the O2 concentration in the solution up to some “critical” value restarts the avalanche-like autocatalytic process of Mo–O bond cleavage in the polyoxomolybdate.

AB - Mechanism of the (Formula presented.)(~300H2O)·(~10CH3 COONH4) polyoxomolybdate degradation in an aqueous solution is proposed and substantiated for the time using kinetic modeling. The mechanism includes four stages: I) non-catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; II) recovery of the bonds between the polyoxomolybdate fragments; III) catalytic cleavage of the Mo–O bond between the polyoxomolybdate fragments; IV) increase of O2 concentration due to the decay of the conjugate pair (Formula presented.) releasing the oxygen molecule and due to O2 diffusion from the gas phase into the polyoxomolybdate aqueous solution. A kinetic model of the considered process is proposed. It is shown that bond recovery prevails over bond cleavage in the polyoxomolybdate due to low residual O2 concentration in the solution. At the same time, increasing the O2 concentration in the solution up to some “critical” value restarts the avalanche-like autocatalytic process of Mo–O bond cleavage in the polyoxomolybdate.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85145360476

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000905664400012

U2 - 10.1134/S0022476622120125

DO - 10.1134/S0022476622120125

M3 - Article

VL - 63

SP - 2004

EP - 2019

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 12

ER -

ID: 33220893