Results 211 to 220 of about 149,991 (265)
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Influence of the density of oxide on oxidation kinetics
Intermetallics, 2014Abstract A new kinetic model is proposed to describe the isothermal oxidation of metals and alloys in the form of sphere, flat plate and fiber shape with considering oxidation induced volume change or Pilling–Bedworth Ratio. The effects of temperature, oxygen partial pressure, particle size, sample shape on the oxidation reaction fraction are ...
Kuo-Chih Chou +3 more
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Kinetics of the thermal oxidation of polydimethylphenylene oxide
Polymer Science U.S.S.R., 1982Abstract The high-temperature oxidation of poly-2,6-dimethyl-1,4-phenylene oxide has been investigated in the temperature range 230–270° under oxygen pressures up to 2 × 10 4 Pa. The oxidation takes place in accordance with an autocatalytic law, which is accounted for by the accumulation of readily oxidizable aldehyde groups.
I.A Serenkova, Yu.A Shlyapnikov
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Kinetics of ethane oxidation on vanadium oxide
The Journal of Physical Chemistry, 1990The oxidation of ethane with molecular oxygen on a well-characterized V{sub 2}O{sub 5}/SiO{sub 2} catalyst produced ethylene and acetaldehyde as the only selective oxidation products. The effects of partial pressures of ethane, oxygen, and water were investigated at 841 K, and it was found that only water had a strong influence on the overall ...
S. Ted. Oyama +2 more
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The kinetics of the oxidation of ammonia by nitrous oxide
Australian Journal of Chemistry, 1964Ammonia is oxidized by nitrous oxide smoothly and homogeneously at temperatures between 658 and 730° and total pressures up to 250 mm. The products of reaction, nitrogen, water, and hydrazine are accounted for by a free-radical mechanism initiated by oxygen atoms which result from the thermal decomposition of nitrous oxide.
TN Bell, JW Hedger
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The Effect of Oxidation on Sorbitol Pathway Kinetics
Diabetes, 1986The rapid conversion of glucose to sorbitol by aldose reductase and the consequent hyperosmolarity of the cytoplasm has been shown to be the primary cause of the so-called “sugar” or “osmotic” cataract in many animal lenses. It is not as clear, however, that hyperosmolarity is the principal factor in the etiology of cataracts in human diabetic subjects.
P A, Barnett +3 more
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KINETICS OF THE OXIDATION OF TITANIUM
Canadian Journal of Research, 1950The rates of oxidation of titanium powder and sintered bar have been investigated in the temperature range 25° to 550 °C. at pressures of 2 and 20 cm. oxygen maintained constant throughout each experiment. It has been shown that the oxidation process can be divided into two mechanisms, viz., the formation of a thin surface film and diffusion of oxide ...
L. M. Pidgeon, W. A. Alexander
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Combustion, Explosion and Shock Waves, 1976
The recently developed interest in boron as a possible component of mixed fuels makes it appropriate to study the oxidation kinetics of boron. Based on experimental data on the oxidation of boron at temperatures of up to 1000~ the authors of [i, 2] have obtained a parabolic oxidation law.
A. I. Grigor'ev +2 more
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The recently developed interest in boron as a possible component of mixed fuels makes it appropriate to study the oxidation kinetics of boron. Based on experimental data on the oxidation of boron at temperatures of up to 1000~ the authors of [i, 2] have obtained a parabolic oxidation law.
A. I. Grigor'ev +2 more
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The Kinetics of the Oxidation of Cobalt
Journal of The Electrochemical Society, 1951The kinetics of oxidation of cobalt is a complex problem since the metal forms two or more oxides and the metal itself has a phase transition from hexagonal to face‐centered cubic at a temperature between 300° and 500°C.The vacuum microbalance method is used to study the effect of time, temperature, pressure, pretreatment, etc., on the rate of the ...
Earl A. Gulbransen, Kenneth F. Andrew
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The kinetics of sulphide oxidation
Environmental Technology Letters, 1985Abstract The oxidation of sulphides was examined both in clean water and in sewage. The oxidants used were oxygen, at initial concentrations of 3 x 10‐4 to 7 x 10‐4M, and hydrogen peroxide (0.01–0.IM). The reactions were carried out at pH 7. Reaction rate constants and the orders of reaction were determined.
R. A. Jolley, C. F. Forster
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Kinetics of the Oxidation of CaS
Metallurgical Transactions B, 1978The kinetics of the oxidation of dense pellets of CaS by the reaction: $$2CaS(s) + 3O_2 (g) \to 2CaO(s) + 2SO_2 (g)$$ was examined by continuous thermogravimetric analysis. The experiments covered a temperature range of 1673 to 1853 K, Ar-O2-SO2 mixtures varying from 1 to 40 pct O2 and 0 to 20 pct SO2, and gas velocities ranging from 20 to 57 cm/
D. C. Lynch, J. F. Elliott
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