It proceeds most effectively via attachment to steps and kinks.
This process does not occur in the core region in its shell-progressive form. It proceeds most effectively via attachment to steps and kinks. Generally only "unshielded" structures cause this process because they can engage in "dangling" interactions. The effects of a diffusion-limited form of this process are proportional to the square root of one minus alpha. The uniformity of this process is measured on curves of normalized activity versus concentration, whose negative slope gives a measure of susceptibility. When the (*) Thiele modulus is large, this process causes a nonlinear change in the effectiveness factor. A form of this process employing lead acetate and quinoline allows palladium to selectively reduce alkynes to alkenes. For 10 points, name this process of chemisorption that blocks the reactive sites available to such catalysts as Lindlar's.
This process does not occur in the core region in its shell-progressive form.
poisoning a catalyst [prompt on catalyst "inhibition" or "deactivation" or other descriptive answers; prompt on "adsorption" or "chemisorption" or related answers before "chemisorption"; prompt on "diffusion" before mentioned; prompt on "deposition"; prompt on "catalysis" I guess]