Methods for enhancing the mesoporosity of zeolite-containing materials
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-029/06
B01J-029/08
B01J-029/40
B01J-029/18
B01J-029/70
B01J-029/04
B01J-037/08
B01J-035/10
출원번호
US-0229878
(2014-03-29)
등록번호
US-9517453
(2016-12-13)
발명자
/ 주소
Martinez, Javier Garcia
Dight, Lawrence B.
Speronello, Barry K.
출원인 / 주소
Rive Technology, Inc.
대리인 / 주소
Hovey Williams LLP
인용정보
피인용 횟수 :
0인용 특허 :
157
초록▼
Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be perf
Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be performed under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity.
대표청구항▼
1. A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising: (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material, wherein said zeolite comprises an aluminosilicate zeolite having a SiO2/Al2O3 ra
1. A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising: (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material, wherein said zeolite comprises an aluminosilicate zeolite having a SiO2/Al2O3 ratio below about 20; and(b) contacting said composite shaped article with at least one pH controlling agent and at least one surfactant under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity in said composite shaped article, thereby forming said shaped zeolitic material with enhanced mesoporosity, wherein said pH controlling agent comprises an acid or a base,wherein said contacting of step (b) causes a net mesopore increase in said zeolite of said composite shaped article. 2. The method of claim 1, wherein said contacting of step (b) causes a net increase of at least 10 percent in the overall mesoporosity of said composite shaped article, wherein said shaped zeolitic material has a total volume of mesopores in the range of from about 0.05 to about 0.9 cc/g. 3. The method of claim 1, wherein said increase in pore volume of said 10 angstrom subset constitutes an increase of at least 0.01 cc/g in said 10 angstrom subset. 4. The method of claim 1, wherein said increase in pore volume of said 10 angstrom subset constitutes an increase of at least 10 percent of the pore volume of said 10 angstrom subset. 5. The method of claim 1, wherein said 10 angstrom subset is contained within a range of 20 to 250 angstroms. 6. The method of claim 1, wherein step (a) includes the substeps of: (i) combining said at least one non-zeolitic material and said at least one zeolite to thereby form an initial mixture; and(ii) shaping said initial mixture into said composite shaped article. 7. The method of claim 1, wherein said at least one non-zeolitic material comprises aluminum oxide, titanium dioxide, zirconium oxide, mullite, hydrous kaolin clay, the residue of alkaline extraction of kaolin clay that has been calcined through the characteristic exotherm at about 1,780° F. without substantial formation of mullite, silicon carbide, silicon nitride, or mixtures thereof. 8. The method of claim 1, further comprising treating at least a portion of said shaped zeolitic material to extract at least a portion of aluminum therefrom. 9. The method of claim 1, wherein said zeolite comprises faujasite. 10. The method of claim 1, wherein said surfactant comprises a cationic surfactant. 11. The method of claim 1, wherein said surfactant comprises an alkylammonium halide. 12. The method of claim 1, wherein the reaction temperature of step (b) is in the range of from about 60 to about 100° C. 13. The method of claim 1, wherein said composite shaped article comprises said zeolite in an amount in the range of from about 0.1 to about 99 weight percent. 14. The method of claim 1, wherein said pH controlling agent comprises a base. 15. A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising: (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material, wherein said zeolite comprises faujasite, mordenite, ZSM-5, CHA, or mixtures thereof; and(b) contacting said composite shaped article with an acid to form an acid-treated shaped article, wherein said contacting further comprises contacting said composite shaped article with at least one surfactant prior to, during, or after said contacting with said acid; and(c) contacting said acid-treated shaped article with a base to form a base-treated shaped article,wherein said base-treated shaped article has an overall mesoporosity that is at least 0.05 cc/g greater than said composite shaped article. 16. The method of claim 15, wherein said base-treated shaped article has an overall mesoporosity that is at least 0.1 cc/g greater than said composite shaped article, wherein said base-treated shaped article has a total volume of mesopores in the range of from about 0.05 to about 0.9 cc/g. 17. The method of claim 15, wherein said base-treated shaped article has an overall mesoporosity that is at least 50 percent greater than the overall mesoporosity of said composite shaped article. 18. The method of claim 15, wherein said base-treated shaped article comprises a mesostructured zeolite. 19. The method of claim 15, wherein said surfactant comprises an alkylammonium halide. 20. A method of preparing a shaped zeolitic material with enhanced mesoporosity, said method comprising: (a) synthesizing a composite shaped article comprising at least one zeolite and at least one non-zeolitic material, wherein said zeolite comprises an aluminosilicate zeolite having a SiO2/Al2O3 ratio below about 20;(b) contacting said composite shaped article with an acid to form an acid-treated shaped article;(c) contacting said composite shaped article with at least one surfactant prior to, during, or after said contacting with said acid; and(d) contacting said acid-treated shaped article with a base to form a base-treated shaped article,wherein said base-treated shaped article has an overall mesoporosity that is greater than said composite shaped article. 21. The method of claim 20, wherein said base-treated shaped article has an overall mesoporosity that is at least 0.05 cc/g greater than said composite shaped article, wherein said base-treated shaped article has a total volume of mesopores in the range of from about 0.05 to about 0.9 cc/g. 22. The method of claim 20, wherein said base-treated shaped article has an overall mesoporosity that is at least 50 percent greater than the overall mesoporosity of said composite shaped article. 23. The method of claim 20, wherein said base-treated shaped article comprises a mesostructured zeolite. 24. The method of claim 20, wherein said surfactant comprises a cationic surfactant. 25. The method of claim 20, wherein said zeolite comprises faujasite, mordenite, ZSM-5, CHA, or mixtures thereof. 26. The method of claim 20, wherein said at least one non-zeolitic material comprises aluminum oxide, titanium dioxide, zirconium oxide, mullite, hydrous kaolin clay, the residue of alkaline extraction of kaolin clay that has been calcined through the characteristic exotherm at about 1,780° F. without substantial formation of mullite, silicon carbide, silicon nitride, or mixtures thereof. 27. The method of claim 20, wherein said composite shaped article comprises said zeolite in an amount in the range of from about 0.1 to about 99 weight percent.
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