Some General Features in the Autocatalytic Reaction between Sulfite Ion and Different Oxidants

2013 ◽  
Vol 45 (7) ◽  
pp. 462-468 ◽  
Author(s):  
István Molnár ◽  
Nándor Takács ◽  
Krisztina Kurin-Csörgei ◽  
Miklós Orbán ◽  
István Szalai
Keyword(s):  
Autocatalytic Reaction ◽  
Sulfite Ion

Sulfite ion substitution of trans-dichlorobis(ethylenediamine)cobalt(III): a classic autocatalytic reaction

2003 ◽  
Vol 355 ◽  
pp. 137-143 ◽  
Author(s):  
W.Gregory Jackson ◽  
Ben Freasier ◽  
Kate Goodyear ◽  
John N. Cooper
Keyword(s):  
Autocatalytic Reaction ◽  
Ion Substitution ◽  
Sulfite Ion

Peristaltic motion of tubular gel driven by acid-autocatalytic reaction

2014 ◽  
Vol 28 (7) ◽  
pp. 457-465 ◽  
Author(s):  
Takashi Mikanohara ◽  
Shingo Maeda ◽  
Yusuke Hara ◽  
Shuji Hashimoto
Keyword(s):  
Autocatalytic Reaction ◽  
Peristaltic Motion

scholarly journals A comparison of different methods to remove dissolved oxygen: Application to the electrochemical determination of imidacloprid

2015 ◽  
pp. 149-155 ◽  
Author(s):  
Ana Djurovic ◽  
Zorica Stojanovic ◽  
Snezana Kravic ◽  
Zvonimir Suturovic ◽  
Tanja Brezo ◽  
...  
Keyword(s):  
Glassy Carbon ◽  
Chemical Method ◽  
Sodium Sulfite ◽  
Physical Method ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Nitrogen Stream ◽  
Sulfite Ion ◽  
Sulfite Solution

This study compares different methods for the removal of oxygen from the solution prior to the chronopotentiometric determination of the insecticide imidacloprid on glassy carbon electrode. The research included the application of the chemical method involving addition of sulfite ion, and the physical method of purging the sample with nitrogen stream, as well as their combination. By comparing analytical signals of imidacloprid, chemical method showed almost the same efficiency as conventional physical method, while the best reproducibility was achieved by applying chemical method with addition of the saturated sodium sulfite solution. The method is very simple and can be applied for deoxygenation of the solution prior to the chronopotentiometric analysis. The application of the chemical deoxygenation significantly shortened duration of the chronopotentiometric analysis of imidacloprid from approximately 15 min to 1 min.

Aspects of autocatalytic reaction kinetics

1983 ◽  
Vol 22 (4) ◽  
pp. 433-436 ◽  
Author(s):  
Michael Frenklach ◽  
David Clary
Keyword(s):  
Reaction Kinetics ◽  
Autocatalytic Reaction

Shelf-life prediction from induction period calorimetric measurements on materials undergoing autocatalytic decomposition

1990 ◽  
Vol 68 (11) ◽  
pp. 2111-2114 ◽  
Author(s):  
Lee D. Hansen ◽  
Delbert J. Eatough ◽  
Edwin A. Lewis ◽  
Robert G. Bergstrom ◽  
Damaris Degraft-Johnson ◽  
...  
Keyword(s):  
Shelf Life ◽  
Induction Period ◽  
Heat Generation ◽  
Life Prediction ◽  
Autocatalytic Reaction ◽  
Calorimetric Measurement ◽  
Autocatalytic Decomposition ◽  
Calorimetric Measurements ◽  
Shelf Life Prediction ◽  
Degradation Reaction

The shelf- or use-life of a material which decomposes by an autocatalytic reaction is shown to be inversely proportional to the rate of heat generation during the induction period of the degradation reaction. Calorimetric measurement of the rate of heat generation during the induction period takes only a few hours. It can often be done at or very near the actual storage or use temperature of the material. Measurements on Lovastatin (2-methylbutanoic acid 1,2,3,7,8,8a-hexahydro-3,7-dimethyl-8-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)ethyl]-1-naphthalenylester) are used as an example of this application. Keywords: autocatalytic, calorimetry, oxidation, decomposition, Lovastatin, Mevacor.

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