This paper describes the development and validation of a global kinetic model for a diesel oxidation catalyst. The model is based on an extension of the classical Voltz model, and incorporates CO, H 2 , NO and HC oxidation, and NO reduction by HC. The model is tested against experimental light-off curves for a variety of scenarios. A one dimensional single channel model for the reactor was used. Parameter optimization was performed using a general pattern search algorithm. The model is shown to be able to capture the ignition curves reasonable well.

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Corrosion inhibition of the self-assembled monolayer (SAM) of 1,2,3-Benzotriazole (BTAH) on virgin and sulfide-covered (tarnished) copper surfaces was studied using impedance, scanning electron microscopy, and Raman spectroscopy. SAM on preexisting sulfide film develops a more improved protection than on the virgin surface. Addition of HSions and nonionic surface active agents (NIS) in SAM-forming solution deteriorate its properties. Raman spectroscopy established formation of polymeric film by adsorption of triazolate ion rather than triazole molecule. A scheme is suggested for improved inhibition of SAM on tarnished copper. Studies indicate a predominant cathodic control of corrosion reaction by the SAM film.

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