Method for producing zeolite
US10239760B2 · kind B2 · utility
2Cited by
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4Claims
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Key dates
| Filing date | Mar 22, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Mar 22, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is provided a method for producing a zeolite more excellent in moisture absorption characteristics. The method includes physically pulverizing a zeolite that has a gradient of a Na/Si value from a surface of the zeolite in a depth direction, that has a proportion of the Na/Si value at a depth of 10 nm from the surface to the Na/Si value at the surface of 90% or more, and that has a proportion of the Na/Si value at a depth of 30 nm from the surface to the Na/Si value at the surface of 70% or more, the Na/Si value representing a composition ratio between Na and Si, and crystallizing the physically pulverized zeolite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.