Kinetics of Active Centers in Surface-catalyzed Reactions

Enhanced Surface Reactions

“…The absence of a chain mechanism in current proposals suggested to account for heterogeneous reaction, including chemisorption, infers that none is able to account for the peculiarities described in this work. The general applicability of the site-creation mechanism to chemisorption (4), heterogeneous chemical reactions (7,12), and to the enhancements described herein would infer a high degree of plausibility. Further quantitative data are required for its confirmation.…”

Kinetics of Chemisorption of Gases on Solids.

“…If chemisorption proceeds through precursors of a physically adsorbed layer, as suggested by Becker (19) or by Ehrlich (75), such an equilibrium would be even more involved. This topic is discussed, more appropriately, in detail elsewhere (188,296,297,307).…”

An introduction to semiconductor surfaces as catalysts

“…Fundamental to the theory of semiconductor catalysis is the degree to which bulk semiconductor properties may be related to surface properties. Theory must also question the nature of catalytic "active centers" (11,12) or "active sites" on solids as first proposed by Taylor (18) and whether they are indeed synonomous with "surface states," a term applied by Bardeen (14) in 1947 to semiconductor surfaces, following theoretical treatment by Tamm (15) and Shockley (16). The theory of surface states gave birth to what can be termed modern semiconductor surface chemistry.…”