One-dimension potential energy diagram

Figure 1 One-dimension potential energy diagram for precursor-mediated chemisorption of molecule R-H. The dotted line barrier above the vacuum zero is for an activated system, whereas the solid line barrier below the vacuum zero is for a facile system. Ed is the activation energy of the physisorbed state and Er is the activation barrier to the chemisorbed state.

Fig. 1.25 One-dimension potential energy diagram for physical adsorption (P, dotted line), and for associative (C, dashed line) and dissociative (D, solid line) chemical adsorption. See text for details...

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