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Maxted's expression, k=k0 (1-αρ) holds good in case smaller quantities of the poison, in which k is the reaction rate constant in the presence of a quantity, ρ, of the catalyst poison, and k0 is the original, unpoisoned reaction rate constant. But this is not applicable if poisons are great.Author feels that more generalized expression is necessary for catalyst investigation as well as developing some industrial catalytic processes.In the present paper, the author has deduced the expression, as follows; k=γ/2 (A-Aρ-1/K) +√γ2/4 (A-Aρ-1/K) 2+ (γ2/K) Ain which A is the catalyst quantity, Aρ=αρA, γ=Ko/A and K is the adsorption equilibrium constants between catalyst and poison. Experimental data presented by Maxted and his coworkers were applied to this expression.

The Reaction Rate Constants in the Presence of a Catalyst Poison