Process for preparing an IZM-2 zeolite in the presence of a mixture of nitrogenous organic structuring agents in hydroxide form and of bromide and of an alkali metal chloride
US11472711B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Sep 25, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jan 13, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/72
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing a synthetic IZM-2 zeolite, which consists in performing a hydrothermal treatment of an aqueous gel containing a source of silicon and a source of amorphous aluminium, two nitrogenous or structuring organic compounds including two quaternary ammonium functions, 1,6-bis(methylpiperidinium)hexane dihydroxide and 1,6-bis(methylpiperidinium)hexane dibromide, used as a mixture, in combination with a source of a specific alkali metal chloride M (preferably NaCl), the aqueous gel not comprising any source of at least one fluoride anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.