Synthesis of hydrothermally stable metal incorporated mesoporous molecular sieve of MCM-41 type
US6497857B1 · kind B1 · utility
2Cited by
7References
23Claims
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Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B37/005
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides methods for preparing hydrothermally stable MCM-41 mesoporous molecular sieves incorporating aluminum and other transition metals. The materials prepared by these methods possess a very high surface area and narrow uniform pore distribution in the mesopore region, and are highly thermally stable whereby the ions are not leached out after high temperature annealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.