Conclusions
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1.
It is found that the reaction of VO2+ with phosphorus-molybdenum-vanadium heteropoly anions (HPAN-n, n=0-6) at pH 2.2–3.0 obeys the kinetic equation v=k' [HPAN-n] [VO2+]/ [H+]α, whereαa=1.5 for HPAN-0 and 1.8 for HPAN-1, and that it includes the formation of an intraspherical intermediate complex [(HPAN-n), VO2+].
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2.
The reactivity of HPAN-n varies in the following order: HPAN-0 > HPAN-1 > HPAN-2 < HPAN-3 < HPAN-4 < HPAN-5 < HPAN-6.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1469–1473, July, 1980.
The authors thank V. M. Berdnikov, R. I. Maksimovskaya, and L. I. Kuznetsova for an interesting discussion on the work.
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Burov, Y.V., Kozhevnikov, I.V., Matveev, K.I. et al. Steady-flow investigation of the kinetics of the reaction between V02+ and phosphorus-molybdenum-vanadium heteropoly anions. Russ Chem Bull 29, 1017–1021 (1980). https://doi.org/10.1007/BF00949145
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DOI: https://doi.org/10.1007/BF00949145