Mesostructured zeolitic materials and methods of making and using the same
View Patent ↗One aspect of the present invention relates to mesostructured zeolites. The invention also relates to a method of preparing mesostructured zeolites, as well as using them as cracking catalysts for organic compounds and degradation catalysts for polymers.
1. A crystalline inorganic mesostructured one-phase material comprising a plurality of mesopores defined within the volume of the crystalline mesostructure, wherein the crystalline inorganic material exhibits an x-ray diffraction pattern having peaks characteristic of both mesoporosity and zeolitic crystallinity, wherein said crystalline inorganic material is selected from the group consisting of metal oxides, zeolites, zeotypes, aluminophosphates, gallophosphates, zincophosphates, titanophosphates, faujasite (FAU), mordenite (MOR), ZSM-5 (MFI), CHA, and any combination thereof.
2. The material of claim 1 wherein a cross-sectional area of each of the plurality of mesopores is substantially the same.
3. The material of claim 1 wherein a cross sectional area of each of the plurality of mesopores has a controlled distribution range.
4. The material of claim 3 wherein the cross sectional area of each of the plurality of mesopores has a diameter and each mesopore diameter has a controlled distribution range.
5. The material of claim 4 wherein each mesopore diameter falls within a 1 nm distribution range.
6. The material of claim 1 wherein the characteristic x-ray diffraction pattern includes peaks at two theta angle degrees between about 5 and 50.
7. The material of claim 1 wherein the material comprises a solid phase that includes a unit cell having repeating structures that repeat for at least 10 nm.
8. The material of claim 1 wherein the crystalline inorganic mesostructured material comprises at least one of a hexagonal pore arrangement, a cubic pore arrangement, or a lamellar pore arrangement.
9. The material of claim 1 , wherein the material has a [MCM-41], [MCM-48], [MCM-50], or [SBA-15] pore arrangement.
10. The material of claim 1 , wherein the material exhibits a sharp nitrogen uptake at a partial pressure [P/P o ] higher than a partial pressure indicating microporosity.
11. The material of claim 10 , wherein the higher partial pressure of the sharp nitrogen uptake of the material is between about 0.2 and 0.6.
12. The material of claim 10 , wherein the higher partial pressure is about 0.3.
13. The material of claim 1 , wherein the mesopores comprise a mean pore diameter from about 2 to about 5 nm.
14. The material of claim 1 , wherein the plurality of mesopores have a wall thickness from about 1 to about 5 nm.
15. The material of claim 1 , wherein the plurality of the mesopores comprise a pore size diameter distribution having a range of from about one half to about double the average pore size diameter.
16. The material of claim 1 , wherein the mesopores define a mesopore pore volume, a majority of the mesopore pore volume having a pore size diameter distribution range of from about one half to about double the average pore size diameter.
17. The material of claim 1 wherein the material has a mesoporous volume adsorption of at least about 0.1 cc/g.
18. The material of claim 1 , wherein the material has a mesoporous volume adsorption of at least about 0.05 cc/g.
19. The material of claim 1 , wherein the material has a mesoporous volume adsorption of at least about 0.2 cc/g.