Porous honeycomb structure and method for manufacturing same
US12162805B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2022 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jun 17, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00793
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A porous honeycomb structure including cell channels passing through an interior of the porous honeycomb structure and partitioned by porous partition walls, wherein the porous partition walls include skeleton portions containing an aggregate and a bonding material, and pore portions formed among the skeleton portions and through which a fluid can flow; and the porous partition walls have a porosity of 40 to 48% as measured by a mercury intrusion method, and a cumulative 50% pore diameter (D50) from a large pore side of 6 to 10 μm in a volume-based cumulative distribution of pore diameters measured by the mercury intrusion method, and a maximum pore diameter observed with a scanning electron microscope of 40 μm or less, and a ratio of a contact area between the aggregate and the bonding material to a surface area of the bonding material observed with the scanning electron microscope of 61 to 80%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.