A Study on a Pre-diesel Oxidation Catalyst for a Heavy-duty Diesel Engine

-The Effects of Macro Pore and Catalyst Density on NO Conversion-

Abstract

A diesel oxidation catalyst (DOC) that oxidizes to convert from NO to NO₂ on platinum plays an important role in a number of diesel exhaust aftertreatment systems. In this study, the quasi-2D DOC model is set up and DOC performance is simulated by parametric sweep of pore diameter, pore porosity of Al₂O₃ which is support materials and platinum density. Therefore, this study aims is to obtain design concept for optimizing performance advances and cost reduction. The results indicate that the increase of macro pore and thickness of the catalyst are favorable to activate oxidation reaction from NO to NO₂.