摘要 |
A new class of manganese oxide octahedral molecular sieves possess a (4 x 4) tunnel structure. The molecular sieves possess the general composition AaÄMbMn16-bO32Ü.nH2O wherein A is a + 1, +2, +3 or +4 tunnel cation or combination thereof, 0</=a</=8, M is a +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 (4 x 4) tunnel structure. The molecular sieves are useful in such applications as oxidation catalysis, hydrocarbon conversion, adsorption and electrochemical sensors. |