Advanced Ceramic Substrate: Catalytic Performance Improvement by High Geometric Surface Area and Low Heat Capacity

971029

02/24/1997

Event
International Congress & Exposition
Authors Abstract
Content
Catalytic performance can be improved by increasing geometric surface area (GSA) and reducing bulk density (BD), namely heat capacity, using high cell-density / thinwall advanced ceramic substrates. The advanced substrates, such as 3 mil/600 cpsi and 2 mil/900 cpsi have improved the catalytic performance over the conventional substrates, and are expected to help in complying with future emission regulations, as well as catalyst downsizing. This paper describes the effects of GSA and BD using Pd-based catalysts. The reduction of hydrocarbons emissions was demonstrated significantly at close-coupled location, and dual bed design was proven effective. The effectiveness at under-floor location was not as significant as the close-coupled location.
Meta TagsDetails
DOI
https://doi.org/10.4271/971029
Pages
10
Citation
Umehara, K., Yamada, T., Hijikata, T., Ichikawa, Y. et al., "Advanced Ceramic Substrate: Catalytic Performance Improvement by High Geometric Surface Area and Low Heat Capacity," SAE Technical Paper 971029, 1997, https://doi.org/10.4271/971029.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
971029
Content Type
Technical Paper
Language
English