TAP approach to kinetic analysis

The microkinetic approach integrates a variety of different data sources to estimate rates and surface coverages. Difficulties may arise when the surface structure changes with time and/or gas composition. With TAP the surface coverage can be directly manipulated, and dynamic models of surface coverage/kinetic relationships can be investigated. [Pg.241]

Similar to the surface science approach, TAP is useful for determining rate constants of elementary reaction steps, activation barriers for surface processes, and adsorption quantities. Surface science techniques utilize well-defined model systems and are useful for understanding the substituent parts of a complex system. The TAP technique uses real materials with complexity intact which makes it possible to study how the system works together to present emergent properties (properties that are more than just the sum of parts), for example, how does surface composition influence surface-to-bulk transport which then manifest an effect on the global kinetics [Pg.241]

Single crystal Poly- crystal (foil, wire) Small particle (dispersion ) [Pg.242]

Smooth With steps, kinks Agglom- erate On flat surface On high surface area support [Pg.242]