Octahedral molecular sieve possessing (4.times.4) tunnel structure and method of its production
US5578282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1994 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Nov 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A new class of manganese oxide octahedral molecular sieves possess a (4.times.4) tunnel structure. The molecular sieves possess the general composition EQU A.sub.a M.sub.b Mn.sub.16-b O.sub.32 n.multidot.H.sub.2 O wherein A is +1, +2, +3 or +4 tunnel cation or combination thereof, 0.ltoreq.a.ltoreq.8, M is +1, +2, +3 or +4 framework-substituting metal cation or combination thereof, 0.ltoreq.b.ltoreq.16 and n.gtoreq.0. A method of producing the molecular sieves includes the steps of dissolving a manganese salt in an organic solvent, e.g., ethanol, adding a permanganate salt to the resulting solution to provide a solid intermediate which is recovered and heated to a temperature which results in producing an octahedral molecular sieve having a (4.times.4) tunnel structure. The molecular sieves are useful in such applications as oxidation catalysis, hydrocarbon conversion, adsorption and electrochemical sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.