Ceramic carrier and ceramic catalyst body
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Jun 20, 2002
app pub date -
Sep 24, 2001
filing date -
Sep 29, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a ceramic carrier and a ceramic catalyst which have NOx absorbent capacity, low heat capacity, low pressure loss and high practical value. According to the present invention, defects are formed by substituting a part of the constituent elements of cordierite with elements which have NOx absorbent capacity, thereby to form a multitude of pores that are capable of directly supporting a catalyst component on the ceramic surface and a ceramic carrier having NOx absorbent capacity is obtained. Since it is not necessary to form a .gamma.-alumina coating layer, a NOx storage-reduction catalyst having small heat capacity and low pressure loss can be obtained.
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