IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
UP-0565812
(2006-12-01)
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등록번호 |
US-7682600
(2010-04-21)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
14 |
초록
▼
The present invention rebates to a process for preparing zeolites having the MTT framework topology defined by the connectivity of the tetrahedral atoms in the zeolite, such as zeolites SSZ-32 and ZSM-23, using an N,N,N,N′,N′,N′-hexamethyl-propane-1,3-diammonium dication as a st
The present invention rebates to a process for preparing zeolites having the MTT framework topology defined by the connectivity of the tetrahedral atoms in the zeolite, such as zeolites SSZ-32 and ZSM-23, using an N,N,N,N′,N′,N′-hexamethyl-propane-1,3-diammonium dication as a structure directing agent.
대표청구항
▼
What is claimed is: 1. A process for preparing a zeolite having the MTT framework topology defined by the connectivity of the tetrahedral atoms in the zeolite, said process comprising: (a) preparing a reaction mixture comprising (1) sources of potassium oxide; (2) optionally, sources of an oxide se
What is claimed is: 1. A process for preparing a zeolite having the MTT framework topology defined by the connectivity of the tetrahedral atoms in the zeolite, said process comprising: (a) preparing a reaction mixture comprising (1) sources of potassium oxide; (2) optionally, sources of an oxide selected from the oxides of aluminum, boron, iron, gallium, titanium, vanadium or mixtures thereof (3) sources of silicon oxide; (4) a structure directing agent comprising a N,N,N,N′,N′N′-hexamethyl-propane-1,3-diammonium dication (hereinafter also referred to as “SDA Q”) and (5) water; (b) maintaining the reaction mixture under conditions sufficient to form crystals of the zeolite; and (c) recovering the crystals of the zeolite. 2. The process of claim 1 wherein said reaction mixture comprises, in terms of mole ratios, the following: YO2/WaOb 15~∞ OH−/YO2 0.10-0.50 Q/YO2 0.05-0.50 K/YO2 0.05-0.50 H2O/YO2 10-70 where Y is silicon; W is aluminum, boron, gallium, indium, iron, titanium, vanadium; a is 1 or 2, b is 2 when a is 1; b is 3 when a is 2; and Q is N,N,N,N′N′N′-Hexamethyl-propane-1,3-diammonium cation. 3. The process of claim 2 wherein said aqueous solution comprises, in terms of mole ratios, the following: YO2/WaOb 30-80 OH−/YO2 0.15-0.30 Q/YO2 0.10-0.40 M2/n/YO2 0.075-0.30 H2O/YO2 25-50. 4. The process of claim 2 wherein Y is silicon and W is aluminum. 5. The process of claim 2 wherein the YO2/WaOb mole ratio is from about 20 to about 80. 6. The process of claim 2 wherein the YO2/WaOb mole ratio is from about 20 to less than 40. 7. The process of claim 2 wherein the YO2/WaOb mole ratio is 40 or more. 8. The process of claim 2 wherein the YO2/WaOb mole ratio is from about 40 to about 80. 9. The process of claim 1 further comprising replacing the potassium cations of the recovered zeolite, at least in part, by ion exchange with a cation or mixture of cations selected from the group consisting of hydrogen and hydrogen precursors, rare earth metals, and metals from Groups IIA, IIIA, IVA, IB, IIB, IIIB, IVB, VIB, and VIII of the Periodic Table of Elements. 10. The process of claim 9 wherein said replacing cation is hydrogen or a hydrogen precursor. 11. A zeolite having the MTT framework topology defined by the connectivity of the tetrahedral atoms in the zeolite and having a composition, as-synthesized and in the anhydrous state, in terms of mole ratios, as follows: YO2/WcOd 15~∞ Q/YO2 0.02-0.10 K/YO2 0.005-0.10 wherein Y is silicon; W is aluminum, boron, gallium, indium, iron titanium, vanadium or mixtures thereof; c is 1 or 2; d is 2 when c is 1 or d is 3 or 5 when c is 2; and Q is N, N, N,N′N′N′-Hexamethyl-propane-1,3-diammonium cation. 12. The zeolite of claim 11 wherein Y is silicon and W is aluminum. 13. The zeolite of claim 11 wherein the YO2/WcOd mole ratio is from about 20 to about 80. 14. The zeolite of claim 11 wherein the YO2/WcOd mole ratio is from about 20 to less than 40. 15. The zeolite of claim 11 wherein the YO2/WcOd mole ratio is 40 or more. 16. The zeolite of claim 11 wherein the YO2/WcOd mole ratio is from about 40 to about 80.
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