Factors influencing oxidation factor

The ionization potential of Ag and the dissociation energy of Ag + are the dominant factors influencing oxidation. It was concluded that with increase in cluster size the ionization potential decreases and the dissociation energy increases. 

Many factors influence acid corrosion. Metallurgy, temperature, water turbulence, surface geometry, dissolved oxygen concentration, metal-ion concentration, surface fouling, corrosion-product formation, chemical treatment, and, of course, the kind of acid (oxidizing or nonoxidizing, strong or weak) may markedly alter corrosion. 

The application of the fluorescence derivatization technique in an HPLC method involves utilization of a post column reaction system (PCRS) as shown in Figure 3 to carry out the wet chemistry involved. The reaction is a 2-step process with oxidation of the toxins by periodate at pH 7.8 followed by acidification with nitric acid. Among the factors that influence toxin detection in the PCRS are periodate concentration, oxidation pH, oxidation temperature, reaction time, and final pH. By far, the most important of these factors is oxidation pH and, unfortunately, there is not one set of reaction conditions that is optimum for all of the PSP toxins. The reaction conditions outlined in Table I, while not optimized for any particular toxin, were developed to allow for adequate detection of all of the toxins involved. Care must be exercised in setting up an HPLC for the PSP toxins to duplicate the conditions as closely as possible to those specified in order to achieve consistent adequate detection limits. 

Leahy JG, AM Byrne, RH Olsen (1996) Comparison of factors influencing trichloroethylene degradation by toluene-oxidizing bacteria. Appl Environ Microbiol 62 825-833. 

This approach of using 2D and 3D monodisperse nanoparticles in catalytic reaction studies ushers in a new era that will permit the identification of the molecular and structural features of selectivity [4,9]. Metal particle size, nanoparticle surface-structure, oxide-metal interface sites, selective site blocking, and hydrogen pressure have been implicated as important factors influencing reaction selectivity. We believe additional molecular ingredients of selectivity will be uncovered by coupling the synthesis of monodisperse nanoparticles with simultaneous studies of catalytic reaction selectivity as a function of the structural properties of these model nanoparticle catalyst systems. 

Xin and co-workers modified the alkaline EG synthesis method by heating the metal hydroxides or oxides colloidal particles in EG or EG/water mixture in the presence of carbon supports, for preparing various metal and alloy nanoclusters supported on carbon [20-24]. It was found that the ratio of water to EG in the reaction media was a key factor influencing the average size and size distribution of metal nanoparticles supported on the carbon supports. As shown in Table 2, in the preparation of multiwalled carbon nanotube-supported Pt catalysts... 

Bolton, J. L. Thompson, J. A. Oxidation of butylated hydroxytoluene to toxic metabolites factors influencing hydroxylation and quinone methide formation by hepatic and pulmonary microsomes. Drug Melah. Dispos. 1991, 19,467-472. 

Nucleophilic Trapping of Radical Cations. To investigate some of the properties of Mh radical cations these intermediates have been generated in two one-electron oxidant systems. The first contains iodine as oxidant and pyridine as nucleophile and solvent (8-10), while the second contains Mn(0Ac) in acetic acid (10,11). Studies with a number of PAH indicate that the formation of pyridinium-PAH or acetoxy-PAH by one-electron oxidation with Mn(0Ac)3 or iodine, respectively, is related to the ionization potential (IP) of the PAH. For PAH with relatively high IP, such as phenanthrene, chrysene, 5-methyl chrysene and dibenz[a,h]anthracene, no reaction occurs with these two oxidant systems. Another important factor influencing the specific reactivity of PAH radical cations with nucleophiles is localization of the positive charge at one or a few carbon atoms in the radical cation. 

Heat of combustion, thermal conductivity, surface area and other factors influencing pyrophoricity of aluminium, cobalt, iron, magnesium and nickel powders are discussed [4], The relationship between heat of formation of the metal oxide and particle size of metals in pyrophoric powders is discussed for several metals and alloys including copper [5], Further work on the relationship of surface area and ignition temperature for copper, manganese and silicon [6], and for iron and titanium [7] was reported. The latter also includes a simple calorimetric test to determine ignition temperature. 

The diurnal variations in mean hourly average oxidant concentration are illustrated in Figures 4-26 and 4-27. Several factors influence the shapes of these curves. The primaiy influence is that of sunlight intensity, inasmuch as photons in the ultraviolet are responsible for the primary photochemical process that leads to ozone formation. Note that the St. 

Heck, W. W. Factors influencing expression of oxidant damage to plants. Ann. Rev. Phytopath. 6 165-188, 1968. 

Summaiy of Important Factors Influencing Co and Mn Site Preference in ccp Oxides... 

While the main carbonylation cycles are now understood in considerable detail for these apparently simple catalytic systems, there will undoubtedly be considerably more work done on these and related sytems to understand the factors influencing the principal steps of oxidative addition, migratory insertion and reductive elimination and, in particular, further work to understand the unwanted reactions that lead to by-products. 

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