State of Platinum Group Metals and Gold in Mineral Acid Solutions and the Catalytic Activity of These Metals in the Oxidation of N-Methyldiphenylamine-4-Sulfonic Acid

Aleksenko, Svetlana S.; Gumenyuk, A. P.; Mushtakova, S. P.

doi:10.1023/b:janc.0000014749.32632.3a

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…The equilibria between these species may be shown as: 2 ] -on diluting the solutions. It has also been reported that in hydrochloric acid solutions at pH 1.0-5.3 the fraction of a cationic rhodium form decreases and uncharged complex becomes the dominating species along with the formation of two negatively charged chloro complexes [13]. It has been shown that the catalytic action is proportional to the content of the cationic complexed species of rhodium in solution.…”

Section: Reaction Kinetics and Stoichiometrymentioning

confidence: 95%

Rhodium(III) catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate(III)

Tandon

Dhusia

2008

Transition Met Chem

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The kinetics of the oxidation of 2-methyl cyclohexanone and cycloheptanone with Fe(CN) 6 3-catalyzed by RhCl 3 in alkaline medium was investigated at four temperatures. The rate follows direct proportionality with respect to lower concentrations of hexacyanoferrate(III) ion, but tends to become zero order at higher concentrations of the oxidant, while the reaction shows first-order kinetics with respect to hydroxide ion and cyclic ketone concentrations. The rate shows a peculiar nature with respect to RhCl 3 concentrations in that it increases with increase in catalyst at low catalyst concentrations but after reaching a maximum, further increase in concentration retards the rate. An increase in the ionic strength of the medium increases the rate, while increase in the Fe(CN) 6 4-concentration decreases the rate.

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Section: Reaction Kinetics and Stoichiometrymentioning

confidence: 95%

Rhodium(III) catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate(III)

Tandon

Dhusia

2008

Transition Met Chem

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“…Unique sensitivity of the kinetic methods allows its appli cation for investigation of highly diluted solutions of the catalysts (as low as 10 -8 mol/L) [1,62,67,[90][91][92][93][94][95].…”

Section: Investigation Of Catalytic Activity Of Different Forms Of Plmentioning

confidence: 99%

Catalytic methods for determination of platinum group metals (Review)

Хомутова

2014

Inorg Mater

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The present state of the art, accomplishments, and prospects of kinetic catalytic methods for determination of rare platinum group metals are considered. Indicator reactions and methods based on them suggested during the last 20 years are reviewed; their metrological characteristics are presented. Results of investiga tion of catalytic activity of different forms of platinum group metals in solution are described. The peculiarities of con ducting of a number of catalytic indicator reactions in flow and test systems are considered.

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Element Speciation Analysis Using Capillary Electrophoresis: Twenty Years of Development and Applications

Timerbaev

2012

Chem. Rev.

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State of Platinum Group Metals and Gold in Mineral Acid Solutions and the Catalytic Activity of These Metals in the Oxidation of N-Methyldiphenylamine-4-Sulfonic Acid

Cited by 8 publications

References 8 publications

Rhodium(III) catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate(III)

Rhodium(III) catalyzed oxidation of cyclic ketones by alkaline hexacyanoferrate(III)

Catalytic methods for determination of platinum group metals (Review)

Element Speciation Analysis Using Capillary Electrophoresis: Twenty Years of Development and Applications

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