Molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same
AssigneeAAC Technologies Pte. Ltd.
InventorsKun Tang, Hezhi Wang, Hongshu Feng, Guochuang Huang
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Abstract
The present disclosure relates to a molecular sieve, preparation thereof and acoustic absorption material and speaker containing the same. The molecular sieve having an MFI-structure, comprising a framework and an off-framework cation, wherein the framework comprises SiO2 and a metal oxide MxOy with M comprising boron, gallium or aluminium; the off-framework cation is at least one of hydrogen ion, alkali metal ion and alkaline earth metal ion. The molecular herein can effectively prevent the failure of the molecular sieve and improve the performance stability of the speaker.
Claims19
A molecular sieve having an MFI-structure, comprising a framework and an off-framework cation, wherein the framework comprises SiO2 and a metal oxide MxOy with M comprises boron (B), gallium (Ga) or aluminium (Al);
- the off-framework cation is at least one of hydrogen ion, alkali metal ion and alkaline earth metal ion;
- wherein
- the atomic ratio of Si/M in the framework is at least 50 when M comprises boron, and wherein M also comprises zirconium,
- the atomic ratio of Si/M in the framework is at least 100 when M comprises gallium, and wherein M also comprises zirconium,
- the atomic ratio of Si/M in the framework is between 50 and 200 when M comprises aluminium, and wherein M also comprises zirconium.
Dependencies are inferred from the claim text.