Determination of Rate Equation for the Electrochemical Hydrogenation and Hydrogenolysis of Furfural in Acidic Media over Copper

Differential pulse polarography was employed for the determination of arsenic in bituminous coal from Figueiras, Parana, Brazil. The dried coal sample was crushed to -100 mesh, ashed, and treated with reducing reagents in acidic media. The arsine generated was collected and selectively oxidized to Al +3 using an absorbing solution of 0.1 mol.L -1 [tris(hydroxymethyl) aminomethane] ( TRIS) and 0. 002 mol.L -1 silver nitrate. A solution of TRIS and hydrochloric acid, pH -1, was used as supporting electrolyte for differential pulse polarographic determination of Al+3 in the concentration range 0.05 -0.60 μglmL. The average arsenic concentration found was 69.0 ± 2.6 mg.kg -1 and was in agreement with the spectrophotometric method using silver-diethyldithiocarbamate-pyridine.

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Solid-contact ionophore-based electrode for determination of pH in acidic media

Journal of Solid State Electrochemistry ◽

10.1007/s10008-008-0557-8 ◽

2008 ◽

Vol 13 (1) ◽

pp. 69-75 ◽

Cited By ~ 10

Author(s):

Elisaveta N. Samsonova ◽

Viktor M. Lutov ◽

Konstantin N. Mikhelson

Keyword(s):

Solid Contact ◽

Acidic Media

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Mechanism and Kinetics for the Electrochemical Hydrogenation and Hydrogenolysis of Furfural in Acidic Media over Copper

ECS Meeting Abstracts ◽

10.1149/ma2020-02191567mtgabs ◽

2020 ◽

Vol MA2020-02 (19) ◽

pp. 1567-1567

Author(s):

Andrew May ◽

Elizabeth Biddinger

Keyword(s):

Electrochemical Hydrogenation ◽

Acidic Media ◽

Mechanism And Kinetics

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Determination of the Rate Equation for a Certain Reaction by a Single Kinetic Pursuit

YAKUGAKU ZASSHI ◽

10.1248/yakushi1947.103.3_350 ◽

1983 ◽

Vol 103 (3) ◽

pp. 350-355

Author(s):

YOSHIAKI FURUYA ◽

YOSHIO YANAGA ◽

RYUICHI UEOKA ◽

MASAMI TOMIYAMA ◽

AKIRA INOUE

Keyword(s):

Rate Equation

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A kinetic study of the oxidation of N(III) by ClO2− in aqueous acidic media

Canadian Journal of Chemistry ◽

10.1139/v80-025 ◽

1980 ◽

Vol 58 (2) ◽

pp. 159-163 ◽

Cited By ~ 5

Author(s):

Samir S. Emeish ◽

Keith E. Howlett

Keyword(s):

Kinetic Study ◽

Rate Equation ◽

Nitrous Acid ◽

Hypochlorous Acid ◽

Chloride Ion ◽

Acidic Media ◽

Kinetics Of

Kinetics of the reaction between nitrous acid and chlorite have been studied spectrophotometrically. The rate equation involves terms [HNO2]1.5 and [ClO2−]0.5, and both an uncatalysed and a chloride ion-catalysed path have been identified. A mechanism involving peroxonitrite and hypochlorous acid as intermediates is shown to be consistent with the observations.

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On the applicability of a few level rate equation model to the determination of exciton versus biexciton kinetics in quasi-zero-dimensional structures

Journal of Applied Physics ◽

10.1063/1.3467002 ◽

2010 ◽

Vol 108 (3) ◽

pp. 033507 ◽

Cited By ~ 9

Author(s):

G. Sęk ◽

A. Musiał ◽

P. Podemski ◽

J. Misiewicz

Keyword(s):

Rate Equation ◽

Equation Model ◽

Rate Equation Model

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The development of a new inhibition kinetic spectrophotometric method for the determination of phenylhydrazine

Journal of the Serbian Chemical Society ◽

10.2298/jsc0507987m ◽

2005 ◽

Vol 70 (7) ◽

pp. 987-993 ◽

Cited By ~ 6

Author(s):

Violeta Mitic ◽

Snezana Nikolic ◽

Vesna Stankov-Jovanovic

Keyword(s):

Detection Limit ◽

Rate Equation ◽

Reaction Rate ◽

Method Development ◽

Kinetic Method ◽

Inhibitory Effect ◽

Reagent Concentration ◽

Inhibition Kinetic ◽

Kinetic Spectrophotometric

Anew sensitive kinetic method has been developed for the determination of trace amounts of phenylhydrazine in the range of 1.08x10-7 to 1.08x10-6 g/cm3. The detection limit of this method is 0.008 ?g/cm3, based on the 3Sb criterion. Themethod is based on the inhibitory effect of phenylhydrazine on the oxidation of Victoria Blue 4-R by KBrO3. The reaction was monitored spectrophotometrically at 596.3 nm. The method development includes the optimization of the reagent concentration and temperature. The kinetic parameters of the reaction are reported and a rate equation is suggested. The effects of certain foreign ions upon the reaction rate were determined for the assessment of the selectivity of the method. The new developed method was found to have fairly good selectivity, sensitivity, simplicity and rapidity.

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