to understand the rate of oxidation of sponge irons and its mechanisim, their physical and chemical properties are normally required. in this report attempt has been made to show the results of research on varius pellets and briqutts produced at ahwaz steel complex. in presenting these data, the rate of oxidation of these articles in air between 300 and 600 °c is also quotted and analysed. in a...

Put the peroxodisulfate ion (S2O82-) in the phase transfer catalyst banzyltriphenylphosphonium can make a catalyst with mild oxidation property, and used it for oxidation of Benzylhalides to corresponding Benzylaldehyde Compounds. For making catalyst used xylene and water as solvent, and it was an easy process with high yield. Oxidation used in reflux condition ...

conclusions changes of ph could remarkably affect the efficiency and oxidation rate of mtbe. in particular, the amount of kap in terms of oxidation declines substantially by moving away from the optimum ph range. in this study, ph 3.5 was considered as the optimal ph in h2o2/nzvi/ultrasonic oxidation process, with the elimination of about 89.56% of the high mtbe concentration. in general, we ca...

oxidation of some benzoins to benziles is reported by using p-toluenesulfonic acid as aselective oxidation catalyst under solvent-free condition in high yield. the adjacent carbonylgroup is necessary for the oxidation of hydroxyl group in these compounds. the reaction iscarried out in a sand-bath at 100 °c with minimum by-products.

lipid oxidation was studied in m. longissimusdorsiand m. semimembranosusin male lambs of northeastern bulgarian fine wool breed and cross of this breed with ile de france, reared indoors and on pasture. the oxidation of the lipids was determined by quantification of thiobarbituric acid reactive substances (tbars), formed during the storage of the muscles at 4 ˚с until 6th dayand -20 ˚с until 90...

sewage stabilization pond is recommended as one of the economical methods for sewage treatment particularly in dry areas of the world and those places which are in shortage of water and income deficit, this method can be used for treatment of sewage in rural areas, small towns and even large cities. sewage stabilization pond system does not require technical equipment and specialists, and efflu...

The reoxidation rate of sponge iron pellets and briquettes and oxidation of pure iron powder with compressibility between 27% and 55% in air and within the temperature range 300-900°C has been investigated. Factors affecting the oxidation rate are presented. These include the effect of temperature, compressibility, and sintering of Fe-powder before and during the oxidation.

Oxidation of formaldehyde (HCHO) is very important, owing to its use in fuel cells. Modification of electrodes surfaces is an excellent way to decrease the overpotentials as well as to increase the current density of the voltammetric response.pt as most efficient metal catalyst can easily be poisoned by product of oxidation and also it has high cost. In this work an efficient and low cost elect...