Manufacturing method of honeycomb structure
US-2017282168-A1 · Oct 5, 2017 · US
Honeycomb structure
US8961886B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8961886-B2 |
| Application number | US-201414184079-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 19, 2014 |
| Priority date | Nov 19, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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A honeycomb structure includes at least one honeycomb unit having a plurality of through holes defined by partition walls extending along a longitudinal direction of the honeycomb unit. The honeycomb unit includes zeolite, an inorganic binder, and a noble metal catalyst. The zeolite is ion-exchanged with Cu and/or Fe to reduce NO x on the zeolite by providing ammonia or its precursor. The noble metal catalyst is supported only in a region of the honeycomb unit. The region extends from one end portion of the honeycomb unit in the longitudinal direction over approximately 1.5% or more to approximately 20% or less of an overall length of the honeycomb unit in the longitudinal direction. The region is provided on a downstream side of the honeycomb unit in a direction in which an exhaust gas is configured to flow through the honeycomb unit.
First claim
Opening claim text (preview).
What is claimed is: 1. A honeycomb structure comprising: at least one honeycomb unit having a plurality of through holes defined by partition walls extending along a longitudinal direction of the honeycomb unit, the honeycomb unit comprising: zeolite ion-exchanged with Cu and/or Fe to reduce NO x on the zeolite by providing ammonia or its precursor; an inorganic binder; and a noble metal catalyst supported only in a region of the honeycomb unit, the region extending from on…
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Classifications
- B01J29/7215Primary
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8961886B2 cover?
- A honeycomb structure includes at least one honeycomb unit having a plurality of through holes defined by partition walls extending along a longitudinal direction of the honeycomb unit. The honeycomb unit includes zeolite, an inorganic binder, and a noble metal catalyst. The zeolite is ion-exchanged with Cu and/or Fe to reduce NO x on the zeolite by providing ammonia or its precursor. The nobl…
- Who is the assignee on this patent?
- Ibiden Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01J29/7215. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).