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US-9522390-B2 · Dec 20, 2016 · US
Method of preparing an activated EU-2 zeolite
US9782760B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9782760-B2 |
| Application number | US-201715605156-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2017 |
| Priority date | Oct 18, 2013 |
| Publication date | Oct 10, 2017 |
| Grant date | Oct 10, 2017 |
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Abstract
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Disclosed herein is a method of making activated EU-2 zeolite, including: pores having a diameter of 30 to 40 Å while maintaining the crystal structure of the EU-2 zeolite; and pores having a diameter of 40 to 200 Å, wherein the volume of the pores having a diameter of 30 to 40 Å is 0.01 to 0.06 cc/g, and the volume of the pores having a diameter of 40 to 200 Å is 0.07 to 0.4 cc/g.
First claim
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What is claimed is: 1. A method of preparing an activated EU-2 zeolite, comprising the steps of: a) hydrothermally synthesizing an EU-2 zeolite; and b) activating the EU-2 zeolite by bringing the EU-2 zeolite into contact with an aqueous alkali solution before or after calcining the EU-2 zeolite, wherein the activated EU-2 zeolite comprises: pores having a diameter of 30 to 40 Å while maintaining a crystal structure of the EU-2 zeolite; and pores having a diameter of 40 to 200 Å, wherein a volume of the pores having a diameter of 30 to 40 Å is 0.01 to 0.06 cc/g, and a volume of the pores having a diameter of 40 to 200 Å is 0.07 to 0.4 cc/g. 2. The method of claim 1 , wherein, in the step b), a molar ratio of alkali cation to aluminum (Na + /Al 2 O 3 ) in the EU-2 zeolite is 0.1 to 0.3. 3. The method of claim 1 , further comprising the step o£ c) substituting alkali cation in the activated EU-2 zeolite with ammonium ion. 4. The method of claim 1 , wherein, in the step b), a molar ratio of silica/alumina in the activated EU-2 zeolite is reduced by 6 to 59% compared to the EU-2 zeolite before the step b). 5. The method of claim 1 , wherein, in the step a), a molar ratio of silica/alumina in the hydrothermally synthesized EU-2 is 80 to 300. 6. The method of claim 1 , wherein, in the step a), a volume of the pores having a diameter of 30 to 40 Å in the hydrothermally synthesized EU-2 zeolite is 0.01 to 0.05 cc/g, and a volume of the pores having a diameter of 40 to 200 Å therein is 0.05 cc/g or less. 7. The method of claim 1 , wherein, in the step a), a total specific surface area of the hydrothermally synthesized EU-2 zeolite is 210 to 250 m 2 /g. 8. The method of claim 1 , wherein the alkali is Na, K or a combination thereof. 9. The method of claim 8 , wherein the aqueous alkali solution has a concentration of 0.05 to 0.3 M and a pH of 13.1 to 13.45.
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Classifications
Iron group metals or copper · CPC title
Noble metals · CPC title
Base treatment · CPC title
to stabilize the total catalyst structure · CPC title
containing crystalline alumino-silicates, e.g. molecular sieves · CPC title
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- What does patent US9782760B2 cover?
- Disclosed herein is a method of making activated EU-2 zeolite, including: pores having a diameter of 30 to 40 Å while maintaining the crystal structure of the EU-2 zeolite; and pores having a diameter of 40 to 200 Å, wherein the volume of the pores having a diameter of 30 to 40 Å is 0.01 to 0.06 cc/g, and the volume of the pores having a diameter of 40 to 200 Å is 0.07 to 0.4 cc/g.
- Who is the assignee on this patent?
- Sk Innovation Co Ltd, Sk Lubricants Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B01J29/041. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 10 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).