Method for producing crystalline, inorganic ion exchange material
US6027560A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Sep 19, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/36
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The method for producing a crystalline, inorganic ion exchange material having the following composition: xM.sub.2 O.ySiO.sub.2.zMeO, wherein x, y and z are numerical values satisfying the relationships of y/x=0.5 to 2.1, preferably 0.5 to 2.0, and z/y=0.001 to 1.0; M stands for Na and K, wherein K/Na is in the range from 0.01 to 1.2; and Me stands for Ca and/or Mg, the method including the steps of adding 1 to 85 parts by weight of water to 100 parts by weight of cullets, wherein the cullets have the following compositon: xM.sub.2 O.ySiO.sub.2 .multidot.zMeO, wherein x, y, z, M, and Me are defined as above, and then baking the resulting mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.