A kinetic study on the action of rubber oxidation inhibitors—III. Kinetics of inhibited oxidation

1964 ◽  
Vol 6 (6) ◽  
pp. 1208-1215
Author(s):  
Kh.S. Bagdasar'yan ◽  
R.I. Milyutinskaya
1975 ◽  
Vol 53 (12) ◽  
pp. 1735-1738 ◽  
Author(s):  
William R. Cullen ◽  
Frank L. Hou

The kinetics of the unimolecular isomerization reaction[Formula: see text]have been studied. The ΔH≠ values in kcal mol−1 are 36.8 ± 2.0 (M = M′ = Mn ), 46.8 ± 0.5 (M = M′ = Re ), 39.2 ± 2.8 (M = Mn, M′ = Re ). The mechanism of the rearrangement is discussed.


2013 ◽  
Vol 634-638 ◽  
pp. 541-545 ◽  
Author(s):  
Jun Seong Park ◽  
Dae Hee Yun ◽  
Tae Won Ko ◽  
Yong Sung Park ◽  
Je Wan Woo

The kinetics of the Diels-Alder reaction of cyclopentadiene with bis(2-ethylhexyl) maleate has been studied at temperatures between 25 and 100 °C and at atmospheric pressure. The influence of temperature on the kinetic constants was determined by fitting the results to the Arrhenius equation. As a result, fitting line similar with the linear curve of the Arrhenius equation at 25, 30 and 40 °C. However, the fitting curve, at 60, 80 and 100 °C, tended towards the outside of the curve in the form of Arrhenius equation. The ratio of endo/exo was a slight change from increase of the reaction temperature.


2009 ◽  
Vol 6 (2) ◽  
pp. 531-536 ◽  
Author(s):  
J. J. Vora ◽  
S. K. Chauhan ◽  
K. C. Parmar ◽  
S. B. Vasava ◽  
S. Sharma ◽  
...  

The photocatalytic degradation of 2,4-dinitrophenol over ZnO was carried out in the presence of light. Control experiments were carried out. The photocatalytic degradation of 2,4-dinitrophenol was observed spectro-photmerically. The various parameters like concentrations of substrate, pH, amounts and band gaps of semiconductor, impact of light intensity, sensitizers and radical quenchers affected the kinetics of the degradation process. A probable mechanism for this process has been proposed.


2000 ◽  
Vol 350 (1) ◽  
pp. 237-243 ◽  
Author(s):  
Edelmira VALERO ◽  
Ramón VARÓN ◽  
Francisco GARCÍA-CARMONA

A kinetic study of an ATP–ADP amplification cyclic system involving the enzymes adenylate kinase, pyruvate kinase and l-lactate dehydrogenase has been made. The stoichiometry of the cycle is 2:1, because two molecules of ADP are synthesized from one each of ATP and AMP, and one molecule of ADP is converted back into one of ATP at each turn of the cycle. This results in a continuous exponential increase in the concentrations of ATP and ADP in the reaction medium, according to the equations obtained. This is therefore a substrate cycle that amplifies itself, the cycling rate increasing continuously with time. The background signal of the reagent was reduced by using apyrase to degrade ATP and ADP in the reagent, permitting detection limits as low as 16pmol of ATP and/or ADP in a continuous spectrophotometric assay.


1973 ◽  
Vol 131 (2) ◽  
pp. 223-236 ◽  
Author(s):  
S. Ainsworth ◽  
N. Macfarlane

The paper reports a study of the kinetics of the reaction between phosphoenolpyruvate, ADP and Mg2+ catalysed by rabbit muscle pyruvate kinase. The experimental results indicate that the reaction mechanism is equilibrium random-order in type, that the substrates and products are phosphoenolpyruvate, ADP, Mg2+, pyruvate and MgATP, and that dead-end complexes, between pyruvate, ADP and Mg2+, form randomly and exist in equilibrium with themselves and other substrate complexes. Values were determined for the Michaelis, dissociation and inhibition constants of the reaction and are compared with values ascertained by previous workers.


2015 ◽  
Vol 55 (1) ◽  
pp. 366-370 ◽  
Author(s):  
Changwei Pan ◽  
Qingyu Gao ◽  
David M. Stanbury

1991 ◽  
Vol 68 (11) ◽  
pp. 888-890 ◽  
Author(s):  
Vessela D. Kortenska ◽  
Nedjalka Vl. Yanishlieva ◽  
Vitalii A. Roginskii

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17123-17130 ◽  
Author(s):  
Fan Ren ◽  
Yan-Fei Zheng ◽  
Xiong-Min Liu ◽  
Qiong-Qiong Yang ◽  
Qiang Zhang ◽  
...  

A kinetic study on the oxidation of abietic acid, providing new basic data.


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