Production of crystalline silicate catalyst having monoclinic structure
US6150294A · kind A · utility
2Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 5, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Dec 5, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for producing a crystalline silicate catalyst having a monoclinic structure, the process comprising providing a crystalline silicate of the MFI-type having a silicon/aluminum atomic ratio lower than 80; treating the crystalline silicate with steam and thereafter leaching aluminum from the crystalline silicate by contact with an aqueous solution of a leachant to provide a silicon/aluminum atomic ratio in the catalyst of at least 80 whereby the catalyst has a monoclinic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.