Experimental Results and Discussion


The formation of 2DGF on Re is done by adsorption of benzene molecules on Re at T « 1,600~1,700 K.17 It is known, that molecules of benzene are adsorbed on (0001)Re with factor of sticking close to unit, and at heating only molecular hydrogen leaves from ad layer benzene, desorption of which is over at T < 800 K. The breaking of C-C bond on a surface releases atoms of carbon, which diffuse in Re till their concentration in a layer, near the surface will not be made even with maximum permissible. After that, carbon atoms collect on a surface of Re (Figure 1). In the interval 18 < t < 21 min the monolayer of graphite is formed on the surface. The layer of graphite is valent-saturated and interferes with the catalytic dissociation molecules of C6H6.

Therefore the film ceases to grow on thickness. Work function of 2DGF on Re was determined in several ways: from Richardson's graph, by surface ionization of atoms difficultly ionized on a surface elements (Na, Ba), and also on a full ionic current (Na, K, Ba). It has been established,

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