Adsorbent for hydrocarbons, catalyst for exhaust gas purification and method for exhaust gas purification
US7981834B2 · kind B2 · utility
4Cited by
2References
24Claims
0Family size
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Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Apr 22, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An object of the present invention is to improve hydrocarbon adsorbing property when zeolite is used as an adsorbent for hydrocarbons. The present invention provides an adsorbent for hydrocarbons characterized by comprising A Type of β-zeolite having a SiO2/Al2O3 ratio (molar ratio) in a range of 10 or more and less than 200 and B Type of β-zeolite having a SiO2/Al2O3 ratio (molar ratio) in a range from 200 to 1,000, and a catalyst for exhaust gas purification containing said adsorbent for hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.