Adsorbed carbonaceous species, anodic

Either chemisorbed carbonaceous species of the net composition CgHpOq or CH20ad are formed anodically from adsorbed methanol molecules. The diffusion of CH2O and HCOOH into the bulk of the solution is counted in electrical units. A distinction between two different paths [22] for CCf2 production is difficult at small coverages with CgHpOq. The net current is expressed for steady-state conditions by Eq. 60 ... 

It is generally recognized [1 —16] now that chemisorbed carbonaceous species are formed during the anodic oxidation of many organic fuels. These species play an important role in our understanding of electrocatalysis. The techniques for their study, their properties and coverage of the surface under different conditions are discussed in this chapter. The role of adsorbed species in the oxidation of various fuels is dealt with in chapter X. 

In contrast to the coverage determined by anodic pulses or by cathodic hydrogen deposition, the radiometric measurements yield the regular coverage 0 since the count from the adsorbed species is proportional to the adsorbed amount in M/cm. The radiometric data do not allow a direct decision if a dehydrogenation occurs during the adsorption process, since only is obtainable if j types of carbonaceous species j... 

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