Testing the validity of the effective rate constant approximation for surface reaction with transport

When one incorporates transport effects into a surface-volume reaction, an integrodifferential equation for the bound state concentration occurs. Such a form is inconvenient for data analysis. An effective rate constant approximation for the solution is correct to 0(Da2) as the Damkohler number Da ---) 0. A numerical simulation of the integrodifferential equation is performed which shows that the effective rate constant approximation is useful even outside this regime. @ 2002 Elsevier Science Ltd. All rights reserved. Keywords-Surface-volume reactions, Integrodifferential equations, Numerical simulation, Surface plasmon resonance, BIAcoreTh’.