Hierarchical porous ZSM-5 molecular sieve, preparation method therefor, HZSM-5 molecular sieve prepared therefrom, and use of molecular sieve
AssigneeSSI New Material (Zhenjiang) Co., Ltd.
InventorsLei Zhang, Mingbo Guo, Yuanhong Ma, Chang Gong
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Abstract
The present invention provides a hierarchical porous ZSM-5 molecular sieve. The hierarchical porous ZSM-5 molecular sieve comprises micropores having a pore size of 0.5-1.8 nm and mesopores having a pore size of 4-30 nm, and has a particle size of 0.3-4 μm, which is obtained by using hemicellulose as a hard template agent.
Claims8
A loudspeaker comprising a back cavity loaded with a hierarchical porous molecular sieve sound-absorbing material, wherein the hierarchical porous molecular sieve sound-absorbing material comprises a hierarchical porous ZSM-5 molecular sieve, wherein the hierarchical porous ZSM-5 molecular sieve comprises micropores having a pore size of 0.5-1.8 nm and mesopores having a pore size of 10-28 nm, and the molecular sieve has a particle size of 0.3-4 μm;
- wherein the hierarchical porous ZSM-5 molecular sieve has a total pore volume of 0.23-0.26 ml/g, and the micropores have a pore volume of 0.12-0.16 ml/g.
A loudspeaker comprising a back cavity loaded with a hierarchical porous molecular sieve sound-absorbing material, wherein the hierarchical porous molecular sieve sound-absorbing material comprises a hierarchical porous HZSM-5 molecular sieve, wherein the hierarchical porous HZSM-5 molecular sieve obtained by subjecting a hierarchical porous ZSM-5 molecular sieve to an ion exchange in a NH4Cl solution, and drying and calcining the product;
- wherein the hierarchical porous ZSM-5 molecular sieve comprises micropores having a pore size of 0.5-1.8 nm and mesopores having a pore size of 10-28 nm, and the molecular sieve has a particle size of 0.3-4 μm;
- wherein the hierarchical porous ZSM-5 molecular sieve has a total pore volume of 0.23-0.26 ml/g, and the micropores have a pore volume of 0.12-0.16 ml/g.
Dependencies are inferred from the claim text.