Exhaust gas purification material and exhaust gas purification device
US11643958B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Mar 24, 2022 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Mar 24, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure provides an exhaust gas purification material and an exhaust gas purification device that can efficiently remove harmful components even after being exposed to high temperature. Such exhaust gas purification material comprises metal oxide particles and noble metal particles supported on the metal oxide particles. The noble metal particles have a particle size distribution with a mean of 1.5 nm and 18 nm and a standard deviation of less than 1.6 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.