scholarly journals Kinetics and Mechanism ofmeso-Tetraphenylporphyrin Iron(III) Chloride Catalysed Oxidation of Indole-3-Acetic Acid by Peroxomonosulphate

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Durairaj Kungumathilagam ◽  
Kulanthaivel Karunakaran
Keyword(s):  
Acetic Acid ◽  
Reaction System ◽  
Kinetic Scheme ◽  
Mechanistic Study ◽  
Radical Mechanism ◽  
First Order ◽  
Catalysed Oxidation ◽  
Indole 3 Acetic Acid ◽  
Catalyst Increase ◽  
Acetonitrile Medium

Mechanistic study onmeso-tetraphenylporphyrin iron(III) chloride (TPP) catalysed oxidation of indole-3-acetic acid by peroxomonosulphate (oxone) in aqueous acetonitrile medium has been carried out. The reaction follows a first order with respect to both substrate and oxidant. The order with respect to catalyst was found to be fractional. The order of reaction with respect to catalyst varies with a concentration of catalyst. Increase in percentage of acetonitrile decreased the rate. The reaction fails to initiate polymerization, and a radical mechanism is ruled out. Activation and thermodynamic parameters have been computed. A suitable kinetic scheme based on these observations is proposed. Significant catalytic activity is observed for the reaction system in the presence of TPP.

scholarly journals Kinetics and mechanism of meso-tetraphenylporphyriniron(III) chloride (TPP) catalysed oxidation of indole by sodium perborate

2013 ◽  
Vol 15 (2) ◽  
pp. 107-111 ◽  
Author(s):  
D. Kungumathilagam ◽  
K. Karunakaran
Keyword(s):  
Acetic Acid ◽  
Catalytic Activity ◽  
Reaction System ◽  
Kinetic Scheme ◽  
Mechanistic Study ◽  
Radical Mechanism ◽  
Aqueous Acetic Acid ◽  
Sodium Perborate ◽  
Acetic Acid Medium ◽  
Catalysed Oxidation

Developing catalyst is very significant for biologically important reactions which yield products, used as drugs. Mechanistic study on meso-tetraphenylporphyriniron(III) chloride (TPP) catalysed oxidation of indole by sodium perborate in aqueous acetic acid medium have been carried out. The reaction follows a fractional order with respect to substrate and catalyst. The order with respect to oxidant was found to be one. Increase in the percentage of acetic acid and increase in the concentration of [H+] decreased the rate. The reaction fails to initiate polymerization, and a radical mechanism is ruled out. Activation and thermodynamic parameters have been computed. A suitable kinetic scheme based on these observations has been proposed. Significant catalytic activity is observed for the reaction system in the presence of TPP.

Evaluation of Kinetic Parameters at the Transport of Indole-3-acetic Acid Through Bulk Liquid Membranes

2017 ◽  
Vol 68 (5) ◽  
pp. 903-907
Author(s):  
Ecaterina Anca Serban ◽  
Ioana Diaconu ◽  
Elena Ruse ◽  
Georgiana Ileana Badea ◽  
Adriana Cuciureanu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Kinetic Parameters ◽  
Trioctylphosphine Oxide ◽  
Bulk Liquid ◽  
Transport Parameters ◽  
Kinetics Parameters ◽  
First Order ◽  
Phase Concentration ◽  
Feed Phase ◽  
Indole 3 Acetic Acid

Indole-3-acetic acid is a growth phytohormone considered the most important representative of auxin class. This paper presents the assessment of some kinetic parameters in the process of transport of indole-3-acetic acid taking into consideration the kinetic model of consecutive irreversible first order reactions. It was pursued the influence upon the process of parameters such as: feed phase concentration, stripping phase concentration in the presence of two type carriers: tributyl phosphate (TBP) and trioctylphosphine oxide (TOPO). Depending on these transport parameters were calculated kinetics parameters such as: pseudo-first-order apparent membrane entrance and exit rate constants, the maximum flux at the entrance and exit out of the membrane. The highest values of the transport flux is obtained in the presence of carrier trioctylphosphine oxide (TOPO) at the concentration in the feed phase of 10-4 mol/L indole-3-acetic acid and a concentration of 10--2mol/L NaOH in the stripping phase.

A kinetic and mechanistic study on the oxidation of indole-3-acetic acid by peroxodisulfate

2005 ◽  
Vol 37 (6) ◽  
pp. 355-360 ◽  
Author(s):  
S. Kalyanasundharam ◽  
G. Chandramohan ◽  
M. Suresh ◽  
V. Anbazhagan, ◽  
S. Lavanya ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Mechanistic Study ◽  
Indole 3 Acetic Acid

Oxidation of indole-3-acetic acid by peroxomonosulphate: A kinetic and mechanistic study

2002 ◽  
Vol 34 (10) ◽  
pp. 569-574 ◽  
Author(s):  
G. Chandramohan ◽  
S. Kalyanasundharam ◽  
R. Renganathan
Keyword(s):  
Acetic Acid ◽  
Mechanistic Study ◽  
Indole 3 Acetic Acid

scholarly journals Threshold effect of caffeic acid on peroxidase-catalysed oxidation of indole-3-acetic acid

1993 ◽  
Vol 33 (1) ◽  
pp. 9-12 ◽  
Author(s):  
Sergey N. Krylov ◽  
Svetlana M. Krylova ◽  
Leonid B. Rubin
Keyword(s):  
Acetic Acid ◽  
Caffeic Acid ◽  
Threshold Effect ◽  
Catalysed Oxidation ◽  
Indole 3 Acetic Acid

New phenolic inhibitors of the peroxidse-catalysed oxidation of indole-3-acetic acid

1980 ◽  
Vol 19 (11) ◽  
pp. 2277-2280 ◽  
Author(s):  
Tsung T. Lee ◽  
Alvin N. Starratt ◽  
John J. Jevnikar ◽  
Albert Stoessl
Keyword(s):  
Acetic Acid ◽  
Catalysed Oxidation ◽  
Indole 3 Acetic Acid
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