| 摘要 |
A new class of manganese oxide octahedral molecular sieves possess a (4x4) tunnel structure. The molecular sieves possess the general composition AaMbMn16-bO32nxH2O wherein A is +1, +2, +3 or +4 tunnel cation or combination thereof, 0</=a</=8, M is +1, +2, +3 or +4 framework-substituting metal cation or combination thereof, 0</=b</=16 and n>/=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 (4x4) tunnel structure. The molecular sieves are useful in such applications as oxidation catalysis, hydrocarbon conversion, adsorption and electrochemical sensors.
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