Process for SSZ-39 synthesis using modified reaction composition
US10843929B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jun 19, 2018 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Jun 19, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B39/48
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for making SSZ-39 zeolite employing at least one organic structure-directing agent (OSDA), in which a substantial quantity of the at least one OSDA, which otherwise would be required to form a zeolite such as SSZ-39, is replaced by at least one quaternary ammonium or phosphonium compound (PFA) or a mixture of two or more thereof that is not itself an OSDA for making SSZ-39. A composition including at least one oxide of silicon; faujasite; at least one organic structure directing agent (OSDA) for making SSZ-39 zeolite; at least one PFA that is not an OSDA for making SSZ-39 zeolite; an alkali metal hydroxide; and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.