Exhaust gas purification catalyst
US10286392B2 · kind B2 · utility
4Cited by
0References
10Claims
0Family size
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Key dates
| Filing date | Aug 1, 2018 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Aug 1, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides an exhaust gas purification catalyst provided with: a substrate of wall flow structure in which inlet cells and outlet cells are partitioned by porous partition walls; and a catalyst layer disposed at least inside the partition wall and including a catalyst body. The catalyst layer satisfies the following conditions: (1) the pore volume of pores no larger than 5 μm, as measured in accordance with a mercury intrusion technique, is 24000 mm3 or greater per L of volume of the substrate; and (2) a permeability coefficient measured by a Perm porometer is 0.6 μm2 to 4.4 μm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.