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Effect of Isopropyl Alcohol on Autoxidation of S(IV) Catalysed by Cu(II) in Alkaline Medium

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Poonam Saini, Himanshu Sharma and DSN Prasad

2025/07/01

DOI: 10.5281/zenodo.15781852

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ABSTRACT

The kinetics of the Isopropyl alcohol inhibited Cu(II) catalysed autoxidation of S(IV) in phosphate buffer medium has been studied and based on the observed results, the following rate has been proposed. Rate constants and the order of reaction were calculated and the reaction was found to be pseudo-first order in all cases. The effects of pH and temperature are also studied. The value of apparent activation (Ea) energy was calculated graphically by Arrhenius equation. Based on the inhibition parameter, the reaction follows a free radical mechanism.
-d[S(lV)]/dt = (k1+ k2[CuII]) [S(lV)]/(1 + B [Isopropyl alcohol])

AUTHOR AFFILIATIONS

Department of Chemistry, Govt. PG College, Jhalawar - 326001, University of Kota, Rajasthan, India

CITATION

Saini P, Sharma H and Prasad DSN (2025) Effect of Isopropyl alcohol on Autoxidation of S(IV) catalysed by Cu(II) in Alkaline Medium. Environmental Science Archives 4(2): 400-407.

REFERENCES

Begam S, Hussain F and Prasad DSN (2013) Kinetics of methanoic acid inhibited uncatalysed and Co₂O₃ catalysed autoxidation of S(IV) in alkaline medium. Der Chemicasinaica 4(1): 122–133.

Begam S, Hussain F, Singh J, Sharma AK and Prasad DSN (2018) Kinetics of sodium sulphite oxidation catalyzed by Co₂O₃ and inhibited by ethylene glycol. Asian Journal of Research in Chemistry 11(3): 610–616. https://doi.org/10.5958/0974-4150.2018.00110.4

Gupta KS, Manoj SV, Mishra CD, Sharma M, Rani A, Jain R and Bansal SP (2000) Atmospheric autoxidation of sulfur(IV): Role of heterogeneous catalysts. Atmospheric Environment 34: 4479.

Gupta KS, Mehta RK, Sharma AK, Mudgal PK and Bansal SP (2008) Kinetics of surface-catalyzed oxidation of sulphur(IV) by dioxygen in aqueous suspensions of cobalt (II) oxide. Transition Met Chem 33: 809–817. https://doi.org/10.1007/s11243-008-9115-6

Hussain F, Begam S, Sharma AK and NDS (2018) Kinetics and mechanism of Co₂O₃ catalysed autoxidation of sulphite and inhibition by sodium benzoate. Journal of the Institute of Chemists (India) 90(4): 104–119.

Hussain F, Begam S, Sharma AK and Prasad DSN (2018a) Kinetics and mechanism of Co₂O₃ catalysed autoxidation of sulphite and inhibition by sodium benzoate. Journal of the Institute of Chemists (India) 90(4): 104–119.

Hussain F, Begam S, Sharma AK and Prasad DSN (2018b) Co₂O₃ catalyzed oxidation of SO₂ in aqueous solution: differing effect of benzamide in alkaline medium. Chemical Science Transactions 7(4): 600–609.

Hussain F, Begam S, Sharma AK and Prasad DSN (2018c) Effect of isopropyl alcohol on autoxidation of S(IV) catalyzed by Co₂O₃ in alkaline medium. Bulletin of Pure and Applied Sciences 37(1): 9–18.

Hussain F, Begam S, Singh J, Sharma AK and Prasad DSN (2018) Kinetics of sodium sulphite oxidation catalyzed by Co₂O₃ and inhibited by ethylene glycol. Asian Journal of Research in Chemistry 11(3): 610–616.

Lee M and Wang J (2017) Autoxidation of sulfur(IV) in alkaline media: a study on catalyst effects and solvent influence. Journal of Physical Chemistry A 121(12): 2456–2465. https://doi.org/10.1021/acs.jpca.7b00315

Manoj SV, Mishra CD, Sharma M, Rani A, Jain R and Gupta KS (2000) Atmos Environ 34: 4479.

Prasad DSN, Rani A, Madnawat PV, Bhargava R and Gupta KS (1991) Kinetics of surface-catalyzed oxidation of sulphur(IV) by dioxygen in aqueous suspensions of cobalt (II) oxide. Journal of Molecular Catalysis 69(3): 393–405.

Sharma AK, Sharma R and Prasad DSN (2018) Effect of aliphatic monocarboxylic acids and alcohols on Ag(I) catalyzed oxidation of SO₂ in aqueous solution. Journal of Materials and Environmental Sciences 9(6): 1829–1837.

Sharma H, Sharma AK and Prasad DSN (2018) Kinetics and mechanism of oxalic acid inhibited and heterogeneous Co₂O₃ catalyzed autoxidation of S(IV) in atmospheric water. Journal of Applied Chemistry 7(5): 1442–1449.

Shivaraj S and Rajagopal S (2018) Effect of alcohols on the kinetics of oxidation of sulfur(IV) by oxygen in the presence of copper(II) catalyst. Journal of Chemical Kinetics 50(7): 730–742. https://doi.org/10.1002/jccs.201800045

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