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Kinetics of Isoamyl Alcohol and Aniline Inhibited Uncatalysed and Ag (I) Catalysed Autoxidation of S (IV) in Acidic Medium


Affiliations
1 Department of Chemistry, Govt. P. G. College, Jhalawar-326001, Rajasthan, India
2 Department of Chemistry, S.P.C. Govt. College, Ajmer-305001, Rajasthan, India
     

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In this paper we report that isoamyl alcohol and aniline are good inhibitor for SO2 oxidation in pH range 4.02-5.25 in the presence of Ag(I). Based on the observed results following rate law given and a free radical mechanism has been proposed. d[S(lV)]/dt = (k1+k2[Ag(I)]) [S(lV)]/1 + B [Organics] Experiments were carried out at 30≤T°C≤40, 4.02≤pH≤5.25, 1×10−3 mol/cm3≤[S(lV)≤10×10−3 mol/cm3, 5×10−6 mol/cm3≤[Ag(I)]≤2.5×10−5 mol/cm3, 5×10−7 mol/cm3≤[Isoamyl alcohol]≤8×10-3 mol/cm3,5×10−7 mol/cm3≤[Aniline]≤3×10-4 mol/cm3. Rate constants and order of reaction were calculated and found pseudo- first order in all cases. The effect of pH and temperature were also discussed. The value of apparent energy were found as 45.16 kJ mol-1 and 26.43 kJ mol-1 in the presence of isoamyl alcohol and aniline respectively.

Keywords

Kinetics, Autoxidation, SO2, Ag(I), Catalysis, Inhibition, Isoamyl Alcohol, Aniline.
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  • Kinetics of Isoamyl Alcohol and Aniline Inhibited Uncatalysed and Ag (I) Catalysed Autoxidation of S (IV) in Acidic Medium

Abstract Views: 78  |  PDF Views: 8

Authors

A. K. Sharma
Department of Chemistry, Govt. P. G. College, Jhalawar-326001, Rajasthan, India
R. Sharma
Department of Chemistry, S.P.C. Govt. College, Ajmer-305001, Rajasthan, India
D. S. N. Prasad
Department of Chemistry, Govt. P. G. College, Jhalawar-326001, Rajasthan, India

Abstract


In this paper we report that isoamyl alcohol and aniline are good inhibitor for SO2 oxidation in pH range 4.02-5.25 in the presence of Ag(I). Based on the observed results following rate law given and a free radical mechanism has been proposed. d[S(lV)]/dt = (k1+k2[Ag(I)]) [S(lV)]/1 + B [Organics] Experiments were carried out at 30≤T°C≤40, 4.02≤pH≤5.25, 1×10−3 mol/cm3≤[S(lV)≤10×10−3 mol/cm3, 5×10−6 mol/cm3≤[Ag(I)]≤2.5×10−5 mol/cm3, 5×10−7 mol/cm3≤[Isoamyl alcohol]≤8×10-3 mol/cm3,5×10−7 mol/cm3≤[Aniline]≤3×10-4 mol/cm3. Rate constants and order of reaction were calculated and found pseudo- first order in all cases. The effect of pH and temperature were also discussed. The value of apparent energy were found as 45.16 kJ mol-1 and 26.43 kJ mol-1 in the presence of isoamyl alcohol and aniline respectively.

Keywords


Kinetics, Autoxidation, SO2, Ag(I), Catalysis, Inhibition, Isoamyl Alcohol, Aniline.