Determination of Monochloramine Formation Rate Constants with Stopped-Flow Spectrophotometry

2004 ◽  
Vol 38 (5) ◽  
pp. 1435-1444 ◽  
Author(s):  
Zhimin Qiang ◽  
Craig D. Adams
Keyword(s):  
Rate Constants ◽  
Formation Rate ◽  
Stopped Flow

scholarly journals Determination of Methane and Carbon Dioxide Formation Rate Constants for Semi-Continuously Fed Anaerobic Digesters

Energies ◽  
2015 ◽  
Vol 8 (1) ◽  
pp. 645-655 ◽  
Author(s):  
Jan Moestedt ◽  
Jonas Malmborg ◽  
Erik Nordell
Keyword(s):  
Carbon Dioxide ◽  
Rate Constants ◽  
Formation Rate ◽  
Anaerobic Digesters

scholarly journals Determination of Rate Constants for the Activation Step in Atom Transfer Radical Polymerization Using the Stopped-Flow Technique

2004 ◽  
Vol 37 (8) ◽  
pp. 2679-2682 ◽  
Author(s):  
Tomislav Pintauer ◽  
Wade Braunecker ◽  
Edmond Collange ◽  
Rinaldo Poli ◽  
Krzysztof Matyjaszewski
Keyword(s):  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Rate Constants ◽  
Stopped Flow ◽  
Atom Transfer

scholarly journals Determination of rapid chlorination rate constants by a stopped-flow spectrophotometric competition kinetics method

2014 ◽  
Vol 55 ◽  
pp. 126-132 ◽  
Author(s):  
Dean Song ◽  
Huijuan Liu ◽  
Zhimin Qiang ◽  
Jiuhui Qu
Keyword(s):  
Rate Constants ◽  
Stopped Flow ◽  
Chlorination Rate

The kinetics of partial processes in the oxidation of ascorbic acid catalyzed by vanadyl tetrasulphophthalocyanine

1982 ◽  
Vol 47 (3) ◽  
pp. 744-754 ◽  
Author(s):  
Dana M. Wagnerová ◽  
Jaroslav Votruba ◽  
Jürgen Blanck ◽  
Josef Vepřek-Šiška
Keyword(s):  
Experimental Data ◽  
Ascorbic Acid ◽  
Reaction Mechanism ◽  
Rate Constants ◽  
Stopped Flow ◽  
Adaptive Identification ◽  
Flow Method ◽  
Acid Catalyzed ◽  
Kinetics Of

The rapid partial reactions of the oxidation of ascorbic acid by dioxygen with vanadyl tetrasulphophthalocyanine as a catalyst were studied by the stopped-flow method. The experimental data were treated on a computer and compared with the kinetic implications resulting from the proposed mechanism. Application of the adaptive identification method led to quantitative solution of the mechanism, i.e. determination of the values of all the isolated rate constants of the reaction mechanism.

scholarly journals Determination of the kinetics underlying the pKa shift for the 2-aminoanthracenium cation binding with cucurbit[7]uril

2015 ◽  
Vol 185 ◽  
pp. 381-398 ◽  
Author(s):  
Suma S. Thomas ◽  
Cornelia Bohne
Keyword(s):  
Rate Constants ◽  
Cation Binding ◽  
Stopped Flow ◽  
Ph Values ◽  
Pka Shift ◽  
Changes Over Time ◽  
Initial Binding ◽  
Flow Experiments ◽  
Over Time

The binding dynamics of the 2-aminoanthracenium cation (AH+) and 2-aminoanthracene (A) with cucurbit[7]uril (CB[7]) was studied using stopped-flow experiments. The kinetics was followed by measuring the fluorescence changes over time for AH+ and A, which emit at different wavelengths. The studies at various pH values showed different mechanisms for the formation of the AH+@CB[7] complex, with this complex formed either by the binding of AH+ or by the initial binding of A followed by protonation. In the latter case, it was possible to determine the protonation ((1.5 ± 0.4) × 109 M−1 s−1) and deprotonation (89 ± 7 s−1) rate constants for complexed A/AH+, which showed that the pKa shift of +3.1 for A/AH+ in the complex is mainly due to a lower deprotonation rate constant.

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