To characterize the mass transfer intensity of gaseous reagents (oxygen and water vapor) to the grain of raw materials (coal and pyrite) we calculated the fluidized bed parameters (porosity), dimensionless criteria, and mass transfer coefficients per unit of contact phase surface (β, m/s) under parameters describing key changes during the conversion of pyritic sulphur and COM.
A possible explanation for the first difference observed in contrast to the study of Gautier et al. [4] might be improved oxygen-based technique and sensitivity of the reagent for oxygen.
The model with the adsorption isotherms of reagent and oxygen being proposed of a Langmuir type is the only one able to justify the observed dependence of the pollutant disappearance rate on dissolved 2-CP concentration, oxygen partial pressure and absorbed light intensity with adsorption parameters deduced from direct measurements.
DEPMPO as a spin trapping reagent for reactive oxygen species was received from Enzo Life Sciences (Farmingdale, USA).
Similarly to autooxidation, β-apocarotenals can also be originated from the oxidation of β-carotene with a radical generating reagent and singlet oxygen (McClure and Lieber, 1995 and Stratton et al., 1993).
Encouraged by the favorable performances, we further verified the biocompatibility of the prepared Ce-doped CNPs and used them as antioxidant reagents to eliminate oxygen free radicals using H2O2 induced model.
Segregation of bimetallic species and increasing dispersion after activation and exposition of the activated samples to the reagents (propene, methanol, oxygen) were consequences of the mobility of silver species and their susceptibility to change the oxidation state.
The phosphate anion is thought to form an ion pair with the Selectfluor reagent on the phosphate oxygen, while the phosphoryl oxygen activates the enamide through hydrogen bonding.
For anoxia experiments, treatments included addition of 1.2 U/ml oxyrase (Oxyrase, Inc., Mansfield, OH, USA), a reagent that removes all oxygen from culture medium [ 34, 35] or 100 μM CoCl2 (Sigma, Zwijndrecht, the Netherlands), a hypoxia mimetic, to the standard culture medium.
The carbonyl group can enter into a variety of chemical reactions; nucleophilic reagents (electron-rich reagents) are attracted to the carbon atom, whereas electrophilic reagents (electron-seeking reagents) are attracted to the oxygen atom.
First, we established effective cooperation mechanism and thermodynamics of heterogeneous reactions of OCE on the structure of surface active groups of the two different types of catalysts Cu (I) (II)/γ-Al2O3 (presumably deposited and permeated type), their connection with the conversion of raw reagents chloride, ethylene, and oxygen, and an increase in yield 1,2-EDC and fewer by-products formed.
