G as Oxidation Catalyst

K Cr O or benzylic oxidations by KMnO. In these examples Cr and Mn, in the oxide form, will be generated as byproducts. 

Particularly challenging is the use of oxygen as oxidant, since it has been proved to be extremely difficult to achieve selectivity with this reagent. In the present case, it was found that GO is a general catalyst to perform the aerobic oxidation of benzylic hydrocarbons [27]. Similarly, benzylic alcohols can also be oxidized to the corresponding carbonylic compound by molecular 

The lack of acidity of N-doped G compared to GO that has been prepared by Hummers oxidation in strong acid media (H SO ) explains why no polymerization takes place when using neutral , non-acidic doped Gs as catalyst. Comparison of the catalytic activity between various doped G shows that the nature of the dopant element plays a role on the catalytic activity, probably because the dopant element is interacting with molecular oxygen forming some kind of peroxy intermediate. Another aspect to be considered when comparing the catalytic activity of GO with that of doped Gs is that the last materials can promote also benzylic oxidations, but with much lesser amounts than those needed for GO. 

The above comment illustrates one key point in the use of G as catalysts, i.e., how to determine the active sites on the carbocatalyst and how to prepare materials having higher density of this type of sites. The present case serves to illustrate one general procedure to address the nature of the sites that should be validated in more cases. At the same time the oxidative dehydrogenation reaction serves to illustrate that similar catalytic activity should be expected for different classes of carbonaceous materials, specially for carbon allotropes closely related as Gs and CNTs. 

For this reason this reaction type, i.e., generation of oxyl radicals in water, is a very general procedure to promote the degradation of organic pollutants in water and, therefore, it can be used for the remediation and treatment of contaminated waste waters. To quantify the efficiency and rate of peroxide decomposition to oxyl radicals, dyes are common probes by monitoring the decrease in the intensity of light absorption at the corresponding A of the dye. In a certain way, this reaction is the catalytic equivalent of the Fenton 

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