A kinetic and mechanistic study on the silver (I)-catalyzed oxidation of l-alanine by cerium (IV) in sulfuric acid medium

Sumathi, T.; Sundaram, Prasannabalaji; Chandramohan, G.

doi:10.1016/j.arabjc.2010.07.002

Cited by 23 publications

(13 citation statements)

References 26 publications

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“…Considerable white deposits were found, indicating that the reaction system can initiate polymerization of acrylonitrile [29,30]. The appearance of precipitate proves the generation of free radicals in the reaction.…”

Section: Test For Free Radicalmentioning

confidence: 96%

Combination of Sodium Dodecylsulfate and 2,2′-Bipyridine for Hundred Fold Rate Enhancement of Chromium(VI) Oxidation of Malonic Acid at Room Temperature: A Greener Approach

et al. 2016

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Chromic acid oxidation of malonic acid in aqueous media has been investigated spectrophotometrically at 303 K. The product glyoxylic acid has been characterized by 13 C-NMR and FTIR spectroscopy. Three representative N-heteroaromatic nitrogen base promoters, 2-picolinic acid, 2,2 0 -bipyridine (bpy) and 1,10-phenanthroline, in combination with the anionic surfactant sodium dodecylsulfate (SDS) enhanced the rate of the oxidation reaction compared to the unpromoted reaction. 2,2 0 -Bipyridine produced the maximum rate enhancement of the three promoters used. The mechanism of the reaction has been proposed with the help of kinetic results and spectroscopic studies. The observed net enhancement of rate effects has been explained by considering the hydrophobic and electrostatic interaction between the surfactants and reactants. The SDS and bpy combination is suitable for malonic acid oxidation.

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Section: Test For Free Radicalmentioning

confidence: 96%

Combination of Sodium Dodecylsulfate and 2,2′-Bipyridine for Hundred Fold Rate Enhancement of Chromium(VI) Oxidation of Malonic Acid at Room Temperature: A Greener Approach

et al. 2016

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“…The observed pseudo-first-order rate constants, k obs , were obtained from the slopes of the linear least-squares fit of the plot of −ln(A 320 ) vs time (t) (Fig. 1), and were reproducible to within 3% with good correlation coefficient values [16,20,25,26]. The kinetics was followed up to 80% completion of the reaction and good firstorder kinetics were observed.…”

Section: Kinetic Measurementsmentioning

confidence: 98%

“…This indicates that the reaction order with respect to [H + ] is first. Since the rate increases with increasing hydrogen ion concentration (Table 1), Ce 4+ should be more reactive species in the form of sulfato-Ce(IV) complexes [25]. On the basis of rate acceleration effects of H 2 SO 4 , the Ce(SO 4 ) 2+ has been considered to be the reactive form in most of the reactions of cerium(IV) [20].…”

Section: Dependence On [H 2 So 4 ]mentioning

confidence: 99%

“…The stock solution of Ce(IV) was obtained by dissolving cerium(IV) ammonium sulfate in 1 mol dm −3 sulfuric acid and was standardized with iron(II) ammonium sulfate solution using ferroin as an external indicator [25,26]. Cerium(IV) solution was always made up and stored in a black coated flask to prevent photochemical reaction.…”

Section: Materials and Reagentsmentioning

confidence: 99%

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Role of surfactants on metal mediated cerium(IV) oxidation of valeraldehyde at room temperature and pressure

Ghosh

Sar

Malik

et al. 2015

Journal of Molecular Liquids

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“…The oxidizing potentialities of Ce(IV) in H 2 SO 4 medium have conclusively been established [5] and oxidant is reported to exist in the form of sulphato species. The oxidation of organic compounds by Ce(IV) usually proceeds via an intermediate complex [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Kinetic and Mechanistic Study of Palladium (II) Catalysed Oxidation of Arginine by Cerium (IV) in Acid Media

Raj¹

2015

IJIRSET

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Kinetics of palladium(II) catalysed oxidation of arginine has been studied by Ce(IV) in acidic medium at 45°C. The reaction show first order kinetics with respect to Ce(IV) and Pd(II) in the oxidation of arginine. The first order kinetics with respect to arginine obtained at its lower concentration changes to zero order at its higher concentration. It is found that pseudo first order rate constant, k obs decreases with increase of [HSO 4 -] and increases with the increase of [H + ]. Various activation parameters have been calculated with the pseudo first order rate constant values observed at three different temperatures. A plausible mechanism has been proposed from the results of kinetic studies, reaction stoichiometry and product analysis.

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A kinetic and mechanistic study on the silver (I)-catalyzed oxidation of l-alanine by cerium (IV) in sulfuric acid medium

Cited by 23 publications

References 26 publications

Combination of Sodium Dodecylsulfate and 2,2′-Bipyridine for Hundred Fold Rate Enhancement of Chromium(VI) Oxidation of Malonic Acid at Room Temperature: A Greener Approach

Combination of Sodium Dodecylsulfate and 2,2′-Bipyridine for Hundred Fold Rate Enhancement of Chromium(VI) Oxidation of Malonic Acid at Room Temperature: A Greener Approach

Role of surfactants on metal mediated cerium(IV) oxidation of valeraldehyde at room temperature and pressure

A Kinetic and Mechanistic Study of Palladium (II) Catalysed Oxidation of Arginine by Cerium (IV) in Acid Media

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